Benefit from a robust combination of HSS cutting performance and a precision step geometry that delivers consistent 12–20 mm hole sizes with reduced setup time; order the tool via Metav Werkzeuge or consult the technical team for tailored advice. Step drill bit 12–20 mm (HSS, straight-fluted) — TECWERK Step drill bit 12–20 mm (HSS, straight-fluted) designed for precise, repeatable stepped holes in production and workshop environments HSS for long tool life Straight-fluted for predictable chip flow 90° step angle for uniform step transitions Shank with 3 flats for secure clamping Precision that reduces rework and saves time The HSS construction and precision execution ensure consistent performance across the stepping range. With a step angle 90° and a 118° tip, the geometry centres reliably and creates accurate incremental diameters between 12–20 mm, lowering the need for secondary finishing. The two cutting edges deliver efficient material removal while the straight flute promotes controlled chip formation, which contributes to shorter production cycles and fewer rejected parts. Secure clamping and repeatable results for high throughput A shank with 3 flats provides a positive, anti-slip connection in standard chucks and holders, improving repeatability from piece to piece. The straight-groove design keeps chips moving away from the cutting zone, supporting stable cutting conditions throughout each stepped hole. These features together yield consistent hole sizes and a surface finish that often eliminates additional deburring steps, making the tool suitable for both bench work and higher-volume drilling stations. Easy integration into standard tooling setups The compact 22 mm shank length and conventional machine interface enable straightforward mounting in drill presses and multi-spindle heads. The tool’s precision manufacturing reduces setup iterations, so machine uptime is maximised. Where process stability is critical, the combination of HSS, two cutting edges and the defined step geometry supports predictable tool life and consistent part quality, simplifying planning for repeat production runs. Contact Metav Werkzeuge for expert technical guidance on the TECWERK step drill bit SKU 2000862084NW and to arrange fast, reliable delivery from our Emmerich location Technical Data Article number: 2000862084NW Item name: Step drill bit 12–20 mm, HSS, straight-fluted Manufacturer: TECWERK Packaging unit: 1 Facts Diameter range: 12–20 mm Steps: 9 Cutting edges: 2 Step angle: 90° Tip angle: 118° Shank length: 22 mm Special features Material: HSS Straight-grooved flute Precision execution Shank with 3 flats FAQ What diameter increments does the step drill cover? The TECWERK step drill bit covers stepped diameters from 12 mm to 20 mm, produced across 9 discrete steps for standardised hole sizing. Is the tool suitable for production use with repeatable accuracy? Yes, the precision design and the 3-flats shank of the TECWERK step drill bit support secure clamping and repeatable results in production environments. What clamping interface is recommended for best performance? A standard chuck or holder that accepts a shank with flats is recommended to ensure the anti-rotation benefit of the 3-flats design when using the TECWERK step drill bit. Can the straight flute help with chip evacuation on continuous runs? The straight-fluted geometry promotes predictable chip flow, which helps maintain stable cutting conditions during consecutive drilling operations with the TECWERK step drill bit. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of the combination of robust HSS construction, spiral chip evacuation and secure clamping for reliable progressive hole-making; order the RUKO step drill directly via Metav Werkzeuge or consult our specialists for selection assistance. RUKO step drill 6–38 mm, HSS spiral flute, 2 cutting edges A RUKO step drill 6–38 mm designed for progressive hole sizes, offering a spiral-fluted HSS geometry and a shank with three flats for secure clamping in workshop and production environments HSS construction for long tool life Spiral flute for smooth chip evacuation Cross-ground tip for accurate hole starts Shank with 3 flats for secure clamping Faster production with progressive hole-making The stepped design enables efficient creation of multiple hole diameters without frequent tool changes, reducing cycle time and tool handling. The HSS body ensures mechanical strength while the spiral flute promotes continuous chip evacuation, which helps maintain cutting stability during progressive drilling. Together, these elements support a steady production rhythm by lowering stoppages and simplifying process planning for general workshop and light industrial tasks. Precision starts and consistent hole geometry Accurate starts and repeatable hole quality are achieved through the cross-ground tip and 118° point angle, which centre reliably and reduce walking when entering the workpiece. The defined 90° step angle controls the transition between diameters for predictable hole edges. These engineered cutting geometries translate directly into less rework and improved fit-up for assemblies, making the tool particularly valuable where consistent hole tolerances matter. Secure clamping and reliable torque transfer The shank with 3 flats provides positive anti-rotation in chucks and collets, improving torque transmission and reducing slippage under load. Combined with the tool’s 2 cutting edges, this configuration delivers balanced cutting forces and smooth feed behaviour. The result is fewer interrupted cuts, more even wear across the cutting lips and a lower risk of chatter in typical workshop set-ups. Easy integration and straightforward maintenance The robust design and simple geometry make the step drill straightforward to integrate into standard machining operations. Routine checks of cutting edges and the flutes for chip build-up maintain performance; re-sharpening is feasible on the cross-ground tip if required to extend service life. For procurement and supply chain efficiency, this tool fits well with consolidated workshop inventories and standard toolholding systems. For reliable step-drilling performance from RUKO, contact Metav Werkzeuge for personalised advice and prompt supply: info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 4000601710NW Name: RUKO step drill 6–38 mm HSS spiral flute Manufacturer: Ruko GmbH Packaging unit: 1 UID: 4000601710NW Core specifications Drilling range: 6–38 mm Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: 3 flats Special features Material: HSS Spiral-fluted design Cross-ground tip Stepped geometry for progressive hole sizes Shank with three clamping flats FAQ What hole diameters can be produced with this tool? The RUKO step drill 6–38 mm creates progressive hole sizes between 6 mm and 38 mm, allowing several diameters from a single tool. How does the spiral flute affect performance? The spiral flute on the RUKO step drill improves chip evacuation and reduces clogging, which maintains cutting stability and extends effective tool life. Is the RUKO step drill suitable for use in standard chucks? Yes, the shank with three flats is designed for secure clamping in typical chucks and collets, reducing slippage during operation. What benefit does the 118° point angle provide? The 118° point angle on this step drill promotes accurate centring and reduces walking at drill entry, improving hole position and surface finish. Can the cutting edges be maintained or re-sharpened? The cross-ground tip and defined cutting geometry allow for re-sharpening of the cutting edges to extend service life while keeping performance consistent. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Efficient stepped drilling from 6–40 mm with HSS construction and a spiral flute reduces tool changes and keeps production moving; order the RUKO step drill directly via Metav Werkzeuge or consult our specialists for tailored advice. RUKO Step Drill 6–40 mm (HSS, spiral flute) – versatile single-tool solution with split point and 3-flat shank RUKO Step Drill 6–40 mm is a high-precision HSS step drill intended for metalworking and general workshop tasks, combining a wide drilling range with spiral flute geometry for consistent chip evacuation HSS with spiral flute for fast chip evacuation Split-point 118° tip for accurate centring 6–40 mm range reduces tool changes Shank with three flats for secure clamping Reduce set-up time with one tool for stepped holes The broad 6–40 mm drilling range makes this a practical single-tool option for workshops that require stepped holes in a sequence of diameters. By covering multiple diameters in one pass, the bit minimises tool changes and saves cycle time while maintaining repeatable results. The HSS material ensures a balance of toughness and wear resistance for routine metalworking operations, and the spiral flute design assists continuous chip removal to keep the hole quality stable over longer runs. Accurate centring and clean hole edges thanks to focused geometry The split-point 118° tip and the two cutting edges provide reliable self-centring and reduce walking at the start of the cut, which improves concentricity and finish. The 90° step angle defines each diameter precisely, so the stepped profile is produced with consistent shoulder definition and minimal burr formation, translating into less rework and faster downstream assembly. The combination of 2 cutting edges and a cross-ground tip supports effective cutting action across the stepped range. Secure clamping and reliable chip control for everyday workshop use A shank with three flats offers positive grip in standard chucks and holders, reducing slippage and run-out for more accurate hole geometry. The spiral flute promotes efficient chip evacuation, lowering the risk of clogging when enlarging holes across multiple steps. Together, these features deliver dependable performance in repetitive tasks and contribute to a steadier production flow, making the tool a practical choice for maintenance and light-series manufacturing. For high-efficiency stepped drilling, order the RUKO Step Drill 6–40 mm (SKU 4000601720NW) through Metav Werkzeuge; specialist advice and ordering are available via info@metav-werkzeuge.com or +49 2822 7131930 Technical data Article number: 4000601720NW Manufacturer: Ruko GmbH Packaging unit: 1 Facts Drilling range: 6–40 mm Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: 3 flats Steps: 16 Special features HSS material Spiral flute (spiralgenutet) Split-point / cross-ground tip (Kreuzanschliff) 2 cutting edges 90° step geometry FAQ What is the drilling range of this step drill? The RUKO Step Drill 6–40 mm covers diameters from 6 mm to 40 mm, allowing multiple stepped holes with a single tool. How many cutting edges does the bit have and what is the tip geometry? The tool features 2 cutting edges and a split-point 118° tip for improved centring and reduced walking. How does the spiral flute affect performance? The spiral flute supports efficient chip evacuation during stepped drilling, helping to maintain consistent hole quality and reduce clogging. What clamping is recommended for stable operation? The shank includes three flats, providing a secure grip in standard chucks or collet systems to minimise slippage and run-out. How many steps are formed by this tool? This step drill creates 16 steps across its 6–40 mm range, each defined by the 90° step geometry. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Combining HSS construction, a broad 5.3–38.5 mm step range and a spiral flute with cross grind ensures fast, precise hole-making across sheet and panel work; the stepped design reduces tool changes and speeds production. Order the RUKO step drill bit directly via Metav Werkzeuge or consult our advisors for application guidance. RUKO Step Drill Bit 5.3–38.5 mm – HSS, Spiral Flute, 11 Steps A robust RUKO step drill bit designed for clean, efficient drilling of metric cable glands and similar applications across a wide diameter range HSS construction for high cutting performance Spiral flute with cross grind for fast chip evacuation Covers 5.3–38.5 mm in 11 precise steps Shank with three flats for secure clamping Faster holemaking with consistent cutting performance The HSS design in this stepped drill provides a reliable balance between toughness and cutting edge retention, delivering steady performance in production environments. The spiral flute combined with a cross grind on the cutting lips improves chip evacuation and reduces clogging, which keeps cycle times down and lowers the frequency of cleaning interruptions. By integrating multiple diameters into one tool, changeovers are minimised, offering measurable time savings and a more efficient workflow for assembly and installation tasks. Precise stepped drilling for repeatable results With an operative range of 5.3–38.5 mm across 11 steps, the stepped geometry ensures repeatable hole sizes without the need for multiple drills. Each step is ground to a 90° step angle and finished with a 118° tip angle, which helps centre the hole and prevent wandering at the start of the cut. The shank includes three flats to secure the bit in chucks or collets, improving concentricity and reducing slippage under load. These design choices translate into accurate hole diameters and reduced rework for panel and gland installations. Robust design tailored for workshop reliability The two cutting-edge configuration and the spiral-nuted flute support continuous removal of material while maintaining a clean cut surface, which benefits downstream processes such as sealing or cable insertion. Built for repetitive use, the stepped drill reduces tool inventory and simplifies drill selection for technicians and purchasing departments alike. Paired with Metav Werkzeuge’s supply chain and quality filter in Emmerich, the tool becomes a dependable component of a workshop’s long-term tool set-up. Contact Metav Werkzeuge in Emmerich at +49 2822 7131930 or info@metav-werkzeuge.com for specific application advice and prompt supply of the RUKO step drill bit. Technical data Article number: 4000601760NW Item designation: RUKO step drill bit 5.3–38.5 mm HSS spiral flute 2 cutting edges 11 steps Manufacturer: Ruko GmbH Packaging unit: 1 Core measurements Diameter range: 5.3–38.5 mm Tip angle: 118° Step angle: 90° Number of cutting edges: 2 Step count: 11 Special features HSS material Spiral flute (spiral-nuted) Cross-ground cutting lips Shank with three flats Designed for metric cable glands FAQ What diameter range does the step drill cover? The step drill covers a diameter range of 5.3–38.5 mm, arranged across 11 distinct steps for versatile hole sizes. Is the bit suitable for drilling metric cable glands? Yes, the RUKO step drill bit is specified for metric cable gland applications and is optimised for clean hole edges in that use case. How does the spiral flute improve drilling? The spiral flute promotes rapid chip evacuation, helping to maintain cutting performance and minimise clogging during continuous operation. What clamping options suit the shank design? The shank’s three flats provide secure clamping in standard chucks and collets, improving concentricity and reducing the risk of slippage. What are the important angles to note on this drill? Key angles are a 118° tip angle for reliable centring and a 90° step angle, both contributing to consistent hole geometry. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Combining HSS construction, a spiral-fluted geometry and a cross-ground 118° point, this step drill delivers fast, repeatable hole stepping and reliable clamping — order directly via Metav Werkzeuge or consult our advisors for application guidance. RUKO step drill 6–32 mm — HSS, spiral-fluted, 2 cutting edges The RUKO step drill 6–32 mm is a hardened, high-speed-steel step drill for efficient hole enlargement and precise staged drilling in thin to medium workpieces HSS, spiral-fluted design Cross-ground 118° point angle Covers 6–32 mm step range Shank with three flats for secure clamping Faster holemaking with fewer tool changes The combination of HSS material and a multi-step profile reduces the need for multiple drills, enabling rapid progression through the 6–32 mm range with a single tool. The spiral-fluted geometry improves chip evacuation compared with straight flutes, so drilling cycles run more smoothly and less time is lost on clearing swarf. This results in measurable time savings on repetitive operations and fewer tool changes across batch runs. Secure clamping and consistently accurate stages A shank fitted with three flats ensures secure seating in chucks or collets, reducing slippage and improving concentricity during drilling. The tool’s 2 cutting edges and cross-ground geometry produce even cutting forces, delivering consistent step diameters and reducing the need for rework. The 118° point angle aids precise centring, particularly when starting holes without pilot drills, so repeatability in production is improved. Cleaner holes and easier finishing The distinct 90° step angle defines each diameter cleanly, helping to avoid oversized transitions and minimise burr formation at each stage. The cross-ground tip reduces vibration and burnishing, producing smoother hole walls that need less finishing. For workshops seeking a balance between productivity and surface quality, this stepped drill bit offers a straightforward way to achieve acceptable results without additional deburring steps. Practical benefits for the workshop and cost control Using a single stepped tool instead of several standard bits reduces inventory and shortens set-up times, which supports leaner workflows on the shop floor. The robust construction and clear step definition help maintain performance across multiple cycles, contributing to lower tooling consumption. Metav’s distribution ensures access to technical advice and reliable supply from Emmerich, reinforcing continuity in workshop operations and purchasing confidence. Contact Metav Werkzeuge today for expert advice on whether the RUKO step drill 6–32 mm fits specific tasks and to arrange supply directly via info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical Data Article number: 4000601713NW Label: Stufenbohrer Bohrber.6-32mm HSS Spiralnut Z.2 Stufen 8 RUKO Manufacturer: Ruko GmbH Facts Diameter range: 6–32 mm Steps: 8 Cutting edges: 2 Point angle: 118° Step angle: 90° Shank: 3 flats Special features HSS material Spiral-fluted (spiralled groove) Cross-ground tip Designed for staged drilling and rapid hole enlargement FAQ What materials is this step drill suitable for? The answer depends on the workpiece; the RUKO step drill 6–32 mm is an HSS stepped tool intended for general-purpose staged drilling in thin to medium metallic sheets and similar substrates where a single-tool hole enlargement strategy is advantageous. How many steps does the drill include and what range is covered? This stepped drill provides 8 distinct steps covering a 6–32 mm diameter range, allowing progressive enlargement without tool changes. How does the spiral flute affect performance? The spiral-fluted design improves chip evacuation compared with straight flutes, supporting smoother drilling cycles and reducing clogging at each step when the RUKO stepped tool is used under appropriate speeds and feeds. Is special clamping required for this bit? A shank with three flats is provided to enable secure clamping in standard chucks or collets, helping to maintain concentricity and prevent slippage during staged drilling operations. What does the cross-ground tip provide in everyday use? The cross-ground tip reduces axial vibration and assists in centring, which improves surface finish and dimensional consistency across the stepped diameters when the tool is used with suitable machine settings. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of the HSS construction with RUNaTEC coating and the TURBO point to achieve fast, repeatable hole steps with reduced rework; order directly via Metav Werkzeuge or contact the team for tailored technical advice. ULTIMATECUT Step Drill Set D 6–12 / 6–20 / 6–27 mm — 3-piece HSS set by Ruko The ULTIMATECUT step drill set provides progressive hole capacities for precision sheet and thin-material work, optimised for production environments and workshop use HSS with RUNaTEC coating prolongs tool life Turbo point for reliable centring and fast starts Spiral flute for efficient chip removal Maximise productivity with engineered cutting geometry The ULTIMATECUT step drills combine HSS performance with a specialised RUNaTEC coating, designed to extend tool life under repetitive use. The TURBO point integrates rapid and reliable centring, reducing the need for pilot holes and thus saving cycle time. With four cutting edges, each step delivers stable cutting action and smoother hole finishes, which decreases rework and improves throughput in standard workshop and light production tasks. Precise stepped diameters for consistent hole progression Three step ranges (Ø 6–12 mm, Ø 6–20 mm, Ø 6–27 mm) and a step length of 10 mm enable controlled enlargement of holes in a single pass. The specified pitches (Ø 6–12 = 1 mm, Ø 6–20 = 2 mm, Ø 6–27 = 3 mm) ensure predictable material removal per step, helping to maintain dimensional accuracy across successive operations. The stepped design minimises burr formation and supports repeatable results when producing a variety of hole sizes from the same tool. Secure clamping and efficient chip evacuation for reliable shifts A shank with three flats provides positive drive in standard chucks and prevents slippage during higher-torque operations, supporting stable machining and consistent concentricity. The spiral flute geometry facilitates rapid chip evacuation away from the cutting zone, reducing heat build-up and the risk of clogging. These features together contribute to lower downtime and longer effective tool life, making the set a practical choice for busy workshops that require robust, dependable tooling. For application advice or to arrange supply of the Ruko ULTIMATECUT step drill set, contact Metav Werkzeuge — email info@metav-werkzeuge.com or call +49 2822 7131930 for expert assistance and ordering support Technical Data Article number: 4000865221NW SKU: 4000865221NW Product: ULTIMATECUT step drill set Manufacturer: Ruko GmbH Packaging unit: 1 Data Step diameters: Ø 6–12 mm, Ø 6–20 mm, Ø 6–27 mm Step length: 10 mm Pitches: Ø 6–12 = 1 mm; Ø 6–20 = 2 mm; Ø 6–27 = 3 mm Pieces: 3 Special features Material: HSS Coating: RUNaTEC Flute type: spiral flute Tip: specially developed TURBO point Cutting edges: 4 cutting edges Shank: with 3 flats Set configuration: three step drills FAQ What diameters are covered by the set? The Ruko ULTIMATECUT step drill set covers diameters Ø 6–12 mm, Ø 6–20 mm and Ø 6–27 mm (SKU 4000865221NW), allowing progressive hole sizes with one tool per range. How does the TURBO point help in practice? The TURBO point on the ULTIMATECUT reduces wandering at start-up and provides fast centre engagement, which lowers the need for pilot holes and speeds up routine drilling tasks. What advantages does the RUNaTEC coating provide? RUNaTEC coating enhances wear resistance on the HSS substrate of these step drills, extending tool life and maintaining cutting performance over longer production runs. Is the shank suitable for standard chucks? Yes, the shank with three flats ensures secure clamping in common chucks and prevents rotation, supporting consistent concentricity during operation. Can these step drills improve cycle times? The combination of a spiral flute for efficient chip removal, four cutting edges and the TURBO point contributes to faster, more reliable drilling and reduced rework with the ULTIMATECUT set. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Combine the superior heat resistance of HSS‑Co5 with the efficient chip evacuation of a spiral flute and secure clamping via a shank with three flats for consistent hole quality; purchase directly through Metav Werkzeuge or consult our specialists for application guidance. RUKO Step drill set Ø4–12 / Ø4–20 / Ø4–30 mm, HSS‑Co5, spiral flute The RUKO Step drill set Ø4–12 / Ø4–20 / Ø4–30 mm is a three‑piece stepped drill set designed for progressive hole enlargement in thin materials, offering a compact solution for workshop and production environments. Spiral flute for fast chip evacuation Cross‑ground cutting edges for clean holes Shank with three flats for secure clamping Impact‑resistant plastic case included Consistent hole quality through material and geometry The three‑piece set uses HSS‑Co5, a cobalt‑alloyed high‑speed steel that improves heat resistance and edge life compared with standard high‑speed steels. Combined with the spiral flute geometry and cross‑ground cutting edges, the design promotes steady chip removal and reduces burr formation during progressive drilling. These features translate into fewer rework cycles and a more reliable hole finish in repetitive operations, supporting steady production throughput. Secure clamping and controlled feed for repeatable results A shank with three flats provides defined clamping surfaces for chucks and collets, minimising slippage and runout during operation. The stepped geometry with specified pitch values (Ø4–12 = 1 mm; Ø4–20 = 2 mm; Ø4–30 = 2 mm) enables controlled axial feed and predictable hole stepping, which is particularly useful when a single tool must produce a range of diameters. The twist‑drill inspired geometry ensures that the cutting action remains efficient across each step, facilitating consistent cycle times and reduced tool changeover. Robust storage and workshop readiness The set is supplied in an impact‑ and break‑resistant plastic case, keeping the three stepped cutters organised and protected from transport damage. Compact storage aids inventory control and reduces the risk of damaged edges before use. As a practical workshop solution, this three‑piece set offers flexibility for a range of hole sizes while simplifying tool management at the bench or on the production line. Contact Metav Werkzeuge for tailored advice and to arrange supply of the RUKO step drill set; call +49 2822 7131930 or email info@metav-werkzeuge.com Technical Data Article number: 4000601746NW SKU: 4000601746NW Manufacturer: Ruko GmbH Packaging unit: 1 Facts Drill diameters: Ø4–12 mm; Ø4–20 mm; Ø4–30 mm Pieces: 3 Pitch: Ø4–12 = 1 mm; Ø4–20 = 2 mm; Ø4–30 = 2 mm Special features Material: HSS‑Co5 Spiral flute Cross‑ground cutting edges Shank with three flats Impact‑ and break‑resistant plastic case FAQ What materials does the set handle best? The RUKO step drill set is manufactured from HSS‑Co5, providing enhanced heat resistance and wear performance; this alloy improves edge life under higher temperatures compared with standard high‑speed steels. How many pieces are included and which diameters are covered? The delivery contains a three‑piece set covering stepped diameters Ø4–12 mm, Ø4–20 mm and Ø4–30 mm, offering a compact range for progressive hole enlargement. How does the shank design improve clamp security? The shank with three flats creates defined contact surfaces for chucks and collets, which reduces the risk of slippage and runout and helps maintain concentricity during drilling. Is the set supplied ready for transport and storage? Yes, the cutters are housed in an impact‑ and break‑resistant plastic case that protects cutting edges and simplifies organisation in the workshop. Manufacturer / Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of the combination of HSS construction, FLOWSTEP® centring tip and a non-slip 3‑flat shank for fast, precise and durable holemaking in a wide range of materials. Order the ULTIMATECUT step drill set directly via Metav Werkzeuge or ask our consultants if technical details require clarification. ULTIMATECUT Step Drill Set D5–12 / 6–20 / 8–30 mm, HSS, spiral‑fluted – Ruko A ULTIMATECUT step drill set designed for rapid, smooth step drilling in sheet metal and round sections, optimised for use with hand‑held electric tools. HSS with RUnaTEC coating FLOWSTEP® centring tip for fast starts Spiral flute with two cutting edges 3‑flat shank prevents slippage Impact‑ and break‑resistant plastic cassette Faster, cleaner holemaking through advanced coating and geometry The set is manufactured from HSS and finished with a RUNaTEC coating to increase thermal stability and reduce wear. The spiral flute and 2 cutting edges provide efficient chip evacuation and a controlled cutting action, which translates into a smoother drilling cycle and reduced operator effort. As a result, the tooling delivers a markedly improved hole quality and, through enhanced lifetime characteristics, can achieve up to 2× more holes compared with conventional step drills — a clear efficiency gain for busy workshops. Point‑accurate centring and reduced setup time on complex surfaces Equipped with the FLOWSTEP® centring tip, the set allows point‑accurate centring without the need for centre‑punching, even on curved surfaces such as pipes and tubes. The geometry includes a 118° tip angle and a 90° step angle, ensuring stable initial engagement and a gradual, low‑impact transition between diameters. This combination reduces the chance of skiving or wobble and speeds up throughput by eliminating extra preparatory steps. Robust construction for reliable workshop performance The tools feature a 3‑flat shank that prevents the bit from turning in the chuck, improving safety and repeatability during handheld operation. The RUnaTEC finish and optimized tool geometry contribute to high wear resistance and heat tolerance, while the set is supplied in an impact‑ and break‑resistant plastic cassette for secure transport and storage. These design choices reduce downtime and part rejection rates, supporting consistent production quality in industrial and craft environments. Smooth handling and suitability for hand‑held electric tools Right‑hand cutting geometry and the FLOWSTEP® transitions ensure a light and steady drilling action, lowering the torque spikes typically felt when stepping up in diameter. Step pitches are tailored for each range to balance feed and control: Ø5–12 = 1 mm, Ø6–20 = 2 mm, Ø8–30 = 2 mm. This makes the set particularly appropriate for portable drills and bench machines where operator comfort and precise control are priorities, while maintaining productivity across diverse materials. Contact Metav Werkzeuge for procurement advice and reliable supply of the Ruko ULTIMATECUT step drill set — expert assistance from Emmerich ensures the right tools and prompt delivery Technical data SKU: 4000865860NW Label: Stufenbohrersatz ULTIMATECUT D.5-12/6-20/8-30mm HSS Spiralnut Manufacturer: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen Packaging unit: 1 UID: 4000865860NW Facts Diameter ranges: 5–12 mm / 6–20 mm / 8–30 mm Tip angle: 118° Step angle: 90° Cutting edges: 2 Step pitch: Ø5–12 = 1 mm; Ø6–20 = 2 mm; Ø8–30 = 2 mm Special features Material: high‑speed steel (HSS) Coating: RUnaTEC Spiral‑fluted geometry FLOWSTEP® centring tip on all steps Right‑hand cutting 3‑flat shank for anti‑rotation Optimised for hand‑held electric tools Supplied in impact‑ and break‑resistant plastic cassette Improved wear resistance and warm hardness, extends service life FAQ What materials can be processed with this step drill set? The ULTIMATECUT step drill set is made of HSS with a RUNaTEC coating and is suitable for common workshop materials; its robust geometry supports drilling in various non‑ferrous and ferrous materials when used under appropriate conditions. How does FLOWSTEP® improve drilling performance? FLOWSTEP® provides a soft, continuous transition between diameters, reducing torque peaks and enabling point‑accurate centring; this results in smoother drilling, less vibration and improved hole quality for the ULTIMATECUT set. Is the set suitable for use in handheld drills? Yes. The 3‑flat shank prevents slippage in chucks and the geometry has been optimised for handheld electric tools, offering a lighter and more controlled drilling action with the ULTIMATECUT set. How are the steps arranged and what are the pitch values? The set covers stepped ranges 5–12 mm, 6–20 mm and 8–30 mm. Step pitches are Ø5–12 = 1 mm, Ø6–20 = 2 mm and Ø8–30 = 2 mm, which balance feed rate and control during progressive drilling. What is included in the delivery? The ULTIMATECUT set is supplied in an impact‑ and break‑resistant plastic cassette for secure storage and easy transport; the cassette contains the stepped drills for the three diameter ranges listed. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Deliver consistent stepped holes with a combination of HSS construction, straight-fluted geometry and a two-cut design that reduces rework and extends tool life. The precision 90° step angle and 118° point angle ensure controlled material removal and cleaner edges. Order the step drill directly via Metav Werkzeuge or ask our consultants if needed. TECWERK Step Drill 20–30 mm — HSS, straight-fluted, 2-cut precision The Step Drill 20–30 mm is a precision HSS step drill created for producing and enlarging stepped holes in a controlled 20–30 mm range, suited to industrial workshop and fabrication applications HSS construction, precision finish Straight-fluted for clean chip evacuation Two cutting edges for fast drilling Shank with three flats for secure clamping Reliable results for stepped holes and reduced rework The tool is built from HSS in a precision execution to keep edge sharpness under continuous use. The stepped diameters covering 20–30 mm allow progressive enlargement without swapping cutters, which shortens cycle times and reduces downtime. The 90° step angle controls burr formation at each step and the 118° point angle aids initial centring, so machining quality improves and subsequent finishing is often minimised. This focus on efficient material removal supports a more predictable production flow. Cutting geometry that improves stability and process speed A straight-fluted profile paired with 2 cutting edges provides consistent chip formation and evacuation, reducing clogging in through-holes. The two-edge geometry balances cutting forces and helps maintain concentricity during drilling, which is particularly beneficial in repetitive operations. The design contributes to lower vibration and more uniform hole walls, translating into fewer rejects and less manual deburring. Precision manufacture further ensures repeatable performance across batches. Practical shank design for secure mounting and quick handling The shank, with three flats and a 22 mm length, ensures secure clamping in standard drill chucks and prevents rotational slip during machining. Short setup times and reliable retention reduce stoppages and improve operator confidence in process stability. The precision step design simplifies tooling decisions on the shop floor: one tool covers the required diameter range, cutting inventory and handling complexity. For additional technical data or compatibility queries, Metav Werkzeuge can provide measurements and guidance. For detailed suitability checks or to reserve the TECWERK Step Drill 20–30 mm, contact Metav Werkzeuge in Emmerich by phone +49 2822 7131930 or email info@metav-werkzeuge.com — consultants will confirm specifications and delivery options. Technical data Article number: 2000862085NW Product label: Step drill 20–30 mm HSS straight-fluted 2 cuts precision Brand: TECWERK Facts Diameter range: 20–30 mm Number of cutting edges: 2 Step angle: 90° Point angle: 118° Shank length: 22 mm Special features Material: HSS Flute: straight-fluted Precision execution Shank with 3 flats Two-step geometry FAQ What diameters does the step drill cover? The TECWERK Step Drill 20–30 mm produces stepped diameters across the 20–30 mm range, allowing progressive enlargement without tool changes. What material is the tool made from and what does that mean for durability? The tool is manufactured from HSS, which offers good wear resistance and edge retention for typical workshop drilling tasks, supporting consistent performance. How many cutting edges does the drill have and why is that important? The step drill has 2 cutting edges, which stabilise cutting forces, improve concentricity and promote uniform chip formation for cleaner holes. How does the shank design affect clamping and run-out? The shank features three flats and a 22 mm length to ensure secure clamping in standard chucks, reducing slip and contributing to stable run-out during machining. Is this step drill suitable for repeated industrial use? Yes — the precision execution and robust geometry of the TECWERK step drill (SKU 2000862085NW) are designed to meet workshop demands and support repeatable holemaking. TECWERK: Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

A reliable choice for precision stepped hole production: the combination of HSS construction, a two-cut geometry and a straight-fluted design ensures consistent hole quality and efficient chip evacuation for steps from 30–40 mm; order directly via Metav Werkzeuge or request technical advice from their consultants. TECWERK Step Drill Bit 30–40 mm — HSS, straight-fluted, two-cut The TECWERK Step Drill Bit 30–40 mm is a precision step drill designed for creating stepped holes in workshop and light industrial metalworking applications, featuring a robust HSS body and a shank with three flats for secure clamping. HSS high-speed steel construction Straight flutes for controlled chip evacuation Precision two-cut geometry 90° step angle, 118° point angle Faster, repeatable stepped hole production for 30–40 mm ranges The precision step drill offers a clear production advantage where several hole diameters are required in a single pass. The HSS material provides good toughness and wear resistance at typical drilling speeds, while the two cutting edges reduce cutting forces and promote stable penetration. This configuration leads to shorter cycle times and fewer tool changes, which improves throughput and reduces fixture handling. The stepped design with defined diameters between 30–40 mm eliminates the need for multiple drills and reduces setup complexity, contributing directly to a more efficient process flow. Controlled chips and stable clamping for predictable tool life A straight-fluted geometry supports smooth chip evacuation and reduces the risk of chip packing in stepped cavities; this helps maintain consistent hole quality across repeated cycles. The straight flutes guide chips away from the cutting zone, lowering heat build-up and wear. The shank is supplied with three flats, allowing for reliable torque transmission in standard chucks and collets and minimising slippage during demanding operations. The tool’s 118° point angle and 90° step angle ensure accurate centring and clean step formation, which reduces the need for secondary finishing operations. Practical workshop advantages and applicability Designed as a precision execution, the bit’s geometry supports consistent results in serial and repair work alike. The tool’s solid construction and defined step geometry promote repeatability, lowering scrap rates and rework. The compact 25 mm shank length balances rigidity and accessibility in confined setups. Operators benefit from predictable performance and simpler tooling logistics, since one stepped tool replaces multiple conventional drills. For technical queries or compatibility checks with existing machines and chucks, Metav’s consultants can provide application-oriented guidance. Contact Metav Werkzeuge for application advice or to request a compatibility assessment and document the required setup for the TECWERK Step Drill Bit — their team based in Emmerich can advise on integration into existing workflows Technical data Article number: 2000862086NW Designation: Step drill 30–40 mm (label translated) Manufacturer: TECWERK Facts Drilling range: 30–40 mm Cutting edges: 2 Step angle: 90° Point angle: 118° Shank length: 25 mm Special features Material: HSS Flute type: straight fluted Precision execution Shank with three flats FAQ What diameters does the step drill cover? The step drill covers steps between 30–40 mm as specified for the TECWERK Step Drill Bit (SKU 2000862086NW). How many cutting edges does the tool have? The tool features two cutting edges, providing stable cutting action and reduced thrust during drilling. What are the key geometry angles and what do they achieve? The bit has a 90° step angle for defined step formation and a 118° point angle to aid centring and initial penetration. What shank design is provided for clamping stability? A shank with three flats is supplied, enabling secure clamping and reduced slippage in standard chucks and holders. Is the tool suitable for precision serial production? Yes; the precision execution and defined geometry of this TECWERK step drill support repeatable results and reduced rework in serial operations. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Taking advantage of HSS construction and spiral flutes ensures efficient chip evacuation and longer tool life, while the split-point geometry and three-flat shank deliver repeatable centring and secure clamping; order the set directly via Metav Werkzeuge or consult the team for application advice. TECWERK Step Drill Set Ø 4–12 / 4–20 / 4–30 mm, HSS, spiral-fluted, split-point TECWERK Step Drill Set for progressive hole enlargement and accurate stepped drilling in workshop and production environments. HSS for high wear resistance Spiral flutes for fast chip evacuation Split-point tip reduces centre walking Three-flat shank for secure clamping Faster, cleaner holes with high-speed steel construction The HSS composition provides a balance of toughness and wear resistance that suits repeated drilling tasks. Combined with spiral flutes, the geometry promotes continuous chip removal from the hole, reducing heat build-up and the risk of material melting or smearing. This translates into cleaner hole edges and fewer secondary operations, which improves throughput and lowers cycle time in routine workshop work. Reliable centring and secure tool retention for consistent results The split-point design reduces the tendency of the drill to wander at the start of the cut, enabling accurate positioning without the need for pilot holes. Paired with the three-flat shank, the drills sit firmly in a three-jaw or specialised chuck, preventing rotation slip and ensuring consistent concentricity across repetitive holes. The resulting process stability supports predictable part quality and reduces rework. Practical workshop features that aid set integration The set offers defined step pitches to control enlargement increments: Ø 4–12 mm = 1 mm, Ø 4–20 mm = 2 mm, Ø 4–30 mm = 2 mm, enabling gradual diameter increase with minimal burr formation. The spiral-fluted profile and split-point geometry simplify chip breaking and evacuation, while the standard shank profile allows straightforward use with common drilling machines and handheld drills equipped with suitable chucks. The package is supplied in a compact plastic case for organised storage and easy transport between workstations. For a dependable step-drilling solution from TECWERK that integrates into production and workshop routines, contact Metav Werkzeuge for technical guidance and ordering via info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 2000862088NW Description: Step drill set D.4-12 / 4-20 / 4-30 mm, HSS, spiral-fluted, split-point, TECWERK Packaging unit: 1 Facts Step pitch Ø 4–12 mm: 1 mm Step pitch Ø 4–20 mm: 2 mm Step pitch Ø 4–30 mm: 2 mm Special features HSS material Spiral flute geometry Split-point tip (cross grind) Shank with three flats Supplied in plastic case FAQ What drilling machines are suitable for these step drills? The TECWERK step drill set is compatible with standard bench and handheld drills that accept a three-flat shank; the three-flat profile improves clamping security in chucks and drill holders. How does the split-point help when starting a hole? The split-point geometry on the TECWERK drills reduces radial forces at entry, minimising walking and often eliminating the need for a pilot hole for accurate hole placement. Are the step pitches adjustable within the set? The set provides fixed step pitches: Ø 4–12 mm = 1 mm, Ø 4–20 mm = 2 mm, Ø 4–30 mm = 2 mm, designed for controlled, sequential diameter enlargement. Is chip evacuation improved compared with straight-flute step drills? Yes; the spiral flutes on the TECWERK tools promote axial chip removal, reducing heat and helping to maintain hole quality over longer runs. Which identifier should be quoted when enquiring about this set? Please quote SKU 2000862088NW when referring to this TECWERK step drill set to ensure precise identification. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Benefit from durable HSS construction and a spiral flute geometry that speeds chip evacuation while the split-point grind reduces walking — together these features support fast, accurate holemaking across stepped diameters. Order the set directly via Metav Werkzeuge or consult our specialists for application advice. RUKO Step drill set Ø4–12 / Ø4–20 / Ø4–30 mm – HSS, spiral flute The RUKO Step drill set Ø4–12/Ø4–20/Ø4–30 mm is a stepped drilling solution designed for precise hole enlargement and rapid size selection across a defined diameter range Spiral-fluted HSS for faster chip evacuation Split-point grind for precise centring Shank with three flats for secure clamping Faster, cleaner holes thanks to spiral flutes and HSS hardness The combination of HSS material and a spiral flute profile accelerates chip removal and maintains cutting edge life under continuous use. The spiral flute guides swarf away from the cutting edge, which reduces heat build-up and the need for frequent clearing during a run of drilled holes. With a split-point grind the starting behaviour improves markedly: less pre‑punching is needed because the tip centres reliably, leading to fewer slipped starts and cleaner entry holes. This technical pairing translates into measurable time savings on repetitive operations and a more predictable machining process. Controlled sizing and secure clamping for repeatable results Stepped geometry with defined step pitch values gives immediate control over hole increments: Ø4–12 = 1 mm, Ø4–20 = 2 mm, Ø4–30 = 2 mm. The pitch specification describes the axial distance between successive step diameters and therefore determines how quickly a target size is reached and how fine the size progression appears. The shank with three flats prevents rotation in the chuck or collet, ensuring repeatable concentricity and torque transmission during higher-load operations. These features help maintain consistent hole diameters and reduce rework. Robust storage and practical handling to protect tool life Delivered in an impact‑ and break‑resistant plastic case, the set stays organised and protected in transit or on the bench, reducing downtime caused by lost or damaged tools. The stepped drills are ready for immediate selection and return to storage, aiding efficient workflow in busy shops. Beyond the hardware, Metav’s quality filter in Emmerich ensures that precision tools arrive inspected and ready for industrial use, supporting reliable supply and straightforward replenishment when tool wear requires replacement. Contact Metav Werkzeuge for availability and technical guidance on the RUKO HSS stepped drills — our specialists in Emmerich can advise on application details and delivery options Technical data Article number: 4000601745NW Label: Step drill set Ø4–12 / Ø4–20 / Ø4–30 mm, HSS, spiral flute, 3-piece, plastic case Manufacturer: Ruko GmbH Packaging unit: 1 UID: 4000601745NW Numbers / Core technical data Diameters: Ø4–12 mm, Ø4–20 mm, Ø4–30 mm Step pitch: Ø4–12 = 1 mm; Ø4–20 = 2 mm; Ø4–30 = 2 mm Special features / Versions Spiral-fluted geometry Split-point (cross) grind Shank with three flats Impact- and break-resistant plastic case FAQ What advantage does the spiral flute offer compared with straight-fluted stepped drills? The spiral flute on this RUKO step drill set channels chips away from the cutting zone more efficiently, reducing heat and clearing swarf for more consistent cutting performance and longer tool life. How do the step pitch values affect holemaking? Step pitch (Ø4–12 = 1 mm; Ø4–20 = 2 mm; Ø4–30 = 2 mm) determines the axial spacing between successive diameters; finer pitch gives closer intermediate sizes, while larger pitch reaches larger diameters with fewer revolutions. Does the drill set require special clamping? The shank with three flats provides positive engagement in standard chucks and collets, enabling secure clamping and reliable torque transmission during use with the RUKO stepped drills. How does the split-point grind improve performance? The split-point (cross) grind reduces walking at the start of a hole and improves centring, which means fewer pilot holes and more accurate entry geometry for every pass. How are the drills stored and protected during transport? The set is supplied in an impact- and break-resistant plastic case that keeps the drills organised and guarded against damage while in transit or on the workshop bench. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Taking advantage of the HSS construction with a spiral flute and a 118° split point delivers precise, repeatable step drilling from 4 to 12 mm with reduced walking and improved chip control. Order the original tool via Metav Werkzeuge or consult our product specialists for application advice. RUKO step drill 4–12 mm — HSS step drill with spiral flute and split point The RUKO step drill 4–12 mm is a high-speed steel step drill for step-wise hole enlargement from 4 to 12 mm, equipped with a spiral-grooved flute and a cross grind split point to aid centring and cutting stability HSS construction for durable cutting performance Spiral flute for effective chip evacuation 118° split point for reduced walking and fast centring Shank with 3 flats for secure clamping Precision cutting for consistent hole quality The solid high-speed steel (HSS) body and the defined step geometry produce repeatable holes across the 4–12 mm range. A step drill delivers several diameters in a single tool, so fewer tool changes are required during production runs. The presence of two cutting edges and a clear step angle of 90° reduces the tendency for burr formation at each diameter change; this leads to shorter rework cycles and a smoother workflow. For workshops that value process reliability, the tool’s construction converts technical specifications into measurable time savings on routine operations. Cleaner chips and improved centring for efficient drilling The spiral-grooved flute promotes continuous chip removal along the entire cutting zone, lowering heat build-up and reducing the risk of clogging—especially when drilling progressive diameters. The split point with a 118° tip angle (cross grind) aids precise centring on the workpiece, minimising the need for pilot holes and preventing scuffing at the drill entry. In practice, this means fewer aborted holes and a higher first-pass yield; the design translates technical details into clear benefits for throughput and component quality. Secure clamping and effortless tool handling A shank with three flats ensures the step drill seats firmly in chucks and holders, preventing slippage under higher torque and enabling stable operation even at heavier feed rates. The tool’s nine-step progression allows controlled enlargement without overloading the cutter, making it suitable for repeated operations in a production environment. Short set-up times and predictable clamping behaviour reduce machine idle time and help maintain consistent hole tolerances across batches. Built for reliable workshop use and traceable quality Manufactured by a precision-tool specialist, the step drill combines established geometries with workmanship aimed at day-to-day industrial use. The concise specification—HSS, spiral flute, 2 cutting edges, 118° point—supports informed purchasing decisions and eases integration into existing machining routines. For procurement teams seeking dependable supply, this item fits a clear quality profile and aligns with efficient replacement strategies without unnecessary complexity. For ordering or tailored advice on the RUKO step drill, contact Metav Werkzeuge—technical consultants are available via info@metav-werkzeuge.com or by phone at +49 2822 7131930 to discuss application specifics and delivery options Technical data Article number: 4000601707NW Label: Step drill 4–12 mm HSS spiral flute, 2 cutting edges, 9 steps, RUKO Manufacturer: Ruko GmbH Präzisionswerkzeuge Core technical figures Range: 4–12 mm Steps: 9 Point angle: 118° Step angle: 90° Cutting edges: 2 Packaging unit: 1 Special features Material: HSS Flute: spiral-grooved Split grind (cross grind) Shank with 3 flats Step drill geometry FAQ What hole sizes does the step drill cover? The RUKO step drill 4–12 mm covers a continuous range from 4 mm up to 12 mm through its staged design, allowing multiple diameters with a single tool. How many steps are included and what does that mean? This tool has nine steps; each step represents a defined diameter increment, enabling progressive enlargement without changing tools during the sequence. Why is the 118° split point useful? A 118° split point with cross grind aids centring and reduces walking at the start of the cut, improving hole accuracy for the RUKO step drill and lowering the need for pilot drilling. Is the tool suited for standard chucks and holders? Yes. The shank with three flats provides reliable seating and torque transfer in conventional chucks and tightening systems. How many cutting edges are on the tool and how does that affect performance? The step drill features two cutting edges; this geometry balances cutting force and surface finish while supporting efficient chip formation across the stepped diameters. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a single tool that covers a 4–12 mm range while maintaining precision and clean chip evacuation; the HSS construction with a spiral flute and cross-ground tip reduces cycle time and tool changes. Order the TECWERK step drill directly via Metav Werkzeuge or consult our technical advisors for further guidance. TECWERK Step drill bit 4–12 mm, HSS, spiral flute, 9-step The TECWERK step drill bit 4–12 mm is a precision-engineered stepped drill for fast, sequential hole-making across the 4–12 mm range, designed for secure clamping and consistent hole quality HSS, precision-ground, cross-cut tip Spiral flute for improved chip evacuation Two cutting edges for clean holes Shank with 3 flats for secure clamping Faster holemaking with fewer tool changes The 4–12 mm stepped design enables continuous enlargement of holes without frequent tool swaps, increasing throughput in repetitive drilling tasks. Constructed from HSS, the bit preserves sharpness under typical workshop loads while the two cutting edges and cross-ground tip assist fast entry and a centred start. This combination converts tool capability into measurable efficiency: fewer interruptions, reduced set-up time and more consistent hole diameters, which translates into smoother production processes and predictable cycle times. Secure clamping and superior chip control for cleaner results A shank with 3 flats and a shank length of 22 mm ensure stable fixation in chucks or holders, limiting slippage and run-out during operation. The spiral flute improves chip evacuation compared with straight-fluted variants, reducing clogging and heat build-up at the cutting zone. The specified 118° point angle and 90° step angle promote precise centring and controlled material removal at each step, producing cleaner edges and minimising burring—benefits that support downstream processes and reduce rework. Precision execution and straightforward integration into the workshop Made as a precision item with nine progressive steps, this tool delivers repeatable step diameters and predictable hole profiles. The design supports a streamlined tooling strategy: one drill covers multiple diameters, easing inventory complexity. Technical maintenance is simple thanks to the robust HSS body and conventional geometry; the clear construction makes inspection straightforward and helps planners forecast replacement intervals. For quality-focused operations, the bit provides the reliability expected from professional tooling and facilitates smoother throughput in mixed-batch environments. For specific application advice or to secure stock of the TECWERK step drill bit, contact Metav Werkzeuge — phone +49 2822 7131930 or e‑mail info@metav-werkzeuge.com — our consultants will advise on suitability and delivery options Technical data Article number: 2000862081NW Manufacturer: TECWERK Packaging unit: 1 Core data Diameter range: 4–12 mm Steps: 9 Cutting edges: 2 Point angle: 118° Step angle: 90° Shank length: 22 mm Shank: 3 flats Special features Material: HSS Spiral flute Cross-ground tip Precision execution FAQ What diameters does this step drill cover? The TECWERK step drill bit covers a continuous range from 4–12 mm, enabling stepped hole enlargement without changing tools. How many steps are on the bit and what does that mean? The tool has 9 steps, which provides a sequence of incremental diameters allowing progressive drilling from the smallest to the largest size in the specified range. What advantages does the spiral flute provide? The spiral flute improves chip evacuation compared with straight flutes, helping to reduce clogging and heat at the cutting edge during drilling. How does the shank design affect clamping? The shank with 3 flats increases grip security in the chuck or holder, reducing slippage and run-out for more consistent hole quality with the TECWERK step drill. What is the purpose of the cross-ground tip and 118° point angle? The cross-ground tip and 118° point angle aid in centring and initial penetration, promoting accurate starts and minimising wandering on contact with the workpiece. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman‑Straße 17, 44263 Dortmund

Take advantage of the combination of robust HSS-Co5 cutting performance, spiral-fluted chip evacuation, and a 3-flat shank for secure clamping to maintain consistent hole quality in production or repair work. Order directly via Metav Werkzeuge or consult our specialists for compatibility and stock information. RUKO Step Drill 4–12 mm — HSS‑Co5, spiral‑fluted, 2‑cut A RUKO Step Drill 4–12 mm designed for precise stepped holes in thin metals and technical plastics, with spiral flutes and a 3‑flat shank for reliable clamping. HSS‑Co5 for enhanced wear resistance Spiral‑fluted for effective chip removal 3‑flat shank for secure clamping 118° point angle for fast centring Consistent cutting with high‑alloy steel for longer tool life The HSS‑Co5 composition denotes high‑speed steel with added cobalt, which increases red‑hardness and wear resistance under elevated temperatures. This alloyed construction provides a stable cutting edge when machining thin stainless steel, mild steel or non‑ferrous metals. The tool’s two cutting edges and cross‑ground point reduce vibration at entry, producing cleaner first steps and minimising burr formation — a direct benefit where repeatable hole quality is required across batches. Reliable chip control for uninterrupted processes The spiral‑fluted geometry evacuates chips more effectively than straight‑fluted step drills, lowering the risk of clogging in the stepped profile and reducing heat build‑up. Improved chip flow leads to fewer interruptions and longer intervals between tool checks. This geometry, combined with the step angle of 90° and precisely ground steps, simplifies deburring and trimming operations, which supports faster cycle times in assembly or fabrication workflows. Secure clamping and accurate centring for production use A shank with three flats permits secure clamping in standard chucks and collets, preventing slippage during heavier feed rates. The 118° point angle encourages reliable centring without the need for a pilot drill in many applications, saving preparation time. With a nominal drilling range of 4–12 mm across the stepped profile, the design is well suited for progressive hole enlargement in sheet work and thin plate, reducing tool changes and setup complexity for repetitive tasks. For precise step drilling choose the RUKO HSS‑Co5 step drill and contact Metav Werkzeuge for stock checks or technical advice direct from Emmerich: info@metav-werkzeuge.com, +49 2822 7131930 Technical Data Article number: 4000601721NW Label: Stufenbohrer Bohrber.4-12mm HSS-Co5 Spiralnut Z.2 Stufen 9 RUKO Manufacturer: Ruko GmbH Facts Drilling range: 4–12 mm Steps: 9 Point angle: 118° Step angle: 90° Cutting edges: 2 Special features Material: HSS‑Co5 Flute: spiral‑fluted Tip: cross‑ground point Shank: with 3 flats Geometry: step drill with 90° step angle FAQ What materials can be machined with this step drill? The RUKO step drill is made from HSS‑Co5 and is suitable for steels and many non‑ferrous metals; its alloyed composition improves performance when cutting mild steel and some stainless grades. Is a pilot hole required before using the step drill? Often no pilot is necessary thanks to the 118° point angle and cross‑ground tip, but a pilot hole can be used in very thin or highly stressed sheets to ensure exact positioning. How does the spiral flute affect drilling performance? Spiral flutes promote continuous chip evacuation and reduce clogging in the stepped profile, which preserves cutting edges and maintains consistent hole quality. Can the tool be held in standard chucks? Yes; the shank with three flats provides secure clamping in common chucks and collet systems to prevent slippage under load. What size range does the tool cover and how precise are the steps? The tool covers stepped diameters from 4 to 12 mm across nine steps, each step ground for repeatable diameters and reduced burr formation. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Precise step drilling from 4–20 mm with a spiral-fluted HSS geometry and nine progressive steps ensures efficient hole production. The cross-ground 118° tip and 90° step angle reduce walking and produce cleaner entries, while the shank with three flats provides secure clamping; order the RUKO step drill directly via Metav Werkzeuge or consult our specialists for application advice. RUKO Step Drill 4–20 mm — HSS, spiral-fluted, 9-step The RUKO Step Drill 4–20 mm is a high-speed steel, nine-step drill designed for progressive hole enlargement with precise centring and reliable clamping. HSS construction for high wear resistance Spiral-fluted for fast chip evacuation 9-step progression from 4 to 20 mm Shank with three flats for secure clamping Faster holemaking with progressive steps and stable entry The stepped geometry offers a progressive hole sizes approach that eliminates frequent tool changes and simplifies setup. With a 4–20 mm range arranged over 9 steps, the tool generates consecutive diameters in one pass, reducing cycle times and minimising repositioning. The cross-ground tip with a 118° point angle helps centre the cutter on first contact, lowering the need for pilot holes and improving first-hole accuracy. These design choices translate into measurable workflow gains when repeatable hole sizes are required on a production run. Improved chip control and tool life from spiral flutes Spiral fluting provides consistent chip evacuation and reduced heat build-up at the cutting zone, contributing to longer service periods between interventions. The combination of a spiral-fluted profile and two cutting edges balances cutting forces and produces smoother holes with less burring. Where reliable chip removal is essential to maintain dimensional quality, this geometry supports sustained machining performance and more predictable surface finishes. Secure clamping and torsion resistance for consistent machining The shank equipped with three flats ensures secure clamping in standard chucks and reduces the risk of slippage under torque. This mechanical lock improves concentricity and repeatability across multiple holes, which is particularly useful in tight-tolerance tasks. The stepped design and 90° step angle also promote gradual material engagement, lowering axial loads during enlargement and contributing to a steadier machining process. Practical choice for workshop workflows and inventory consolidation As a single-tool solution for a range of hole diameters, the stepped cutter supports leaner tooling inventories and faster job changeovers. The solid HSS construction combines toughness with ground geometry that maintains cutting performance across the step sizes. The compact profile and standard shank make the item straightforward to integrate into existing drill setups, offering a pragmatic option for maintenance, fabrication and general workshop applications where progressive holemaking is required. For consistent step-drilling performance and tailored application advice, contact Metav Werkzeuge—Metav’s experts will assist with selection and supply of the RUKO step drill (SKU 4000601708NW); eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930 Technical data Article number: 4000601708NW Name: RUKO Step Drill 4–20 mm (HSS, 9 steps) Manufacturer: Ruko GmbH Packing unit: 1 Facts Diameter range: 4–20 mm Number of steps: 9 Point angle: 118° Step angle: 90° Cutting edges: 2 Special features HSS material Spiral-fluted (twist-fluted) Cross-ground tip Shank with three flats 2-cutting-edge geometry FAQ What hole sizes does the tool cover? The tool covers a continuous progression from 4 to 20 mm across nine defined steps, enabling multiple final diameters with a single cutter. How many steps are included and what is the SKU? The cutter features 9 steps and is listed as SKU 4000601708NW for easy identification in inventory systems. How does the shank design improve machining reliability? The shank with three flats secures the tool against rotation in standard chucks, improving concentricity and reducing slippage during drilling. What benefits does the cross-ground 118° tip provide? The cross-ground 118° tip improves centring on initial contact and minimises walking, which supports cleaner hole entries and reduces the need for pilot drilling. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a precision HSS step drill with spiral flutes and a shank with three flats for reliable clamping and reduced tool changes in everyday workshop operations; order directly via Metav Werkzeuge or consult our technical advisors for application guidance. TECWERK Step Drill 4–20 mm, HSS, Spiral Flute The TECWERK Step Drill 4–20 mm is a precision HSS step drill designed for quick production of stepped holes in thin materials across general workshop and light fabrication applications. HSS, precision finish with 2 cutting edges Spiral-fluted design for improved chip evacuation 118° point angle for reliable centring Shank with three flats for secure clamping Consistent, economical drilling across a range of hole sizes The spiral-fluted step drill delivers a practical alternative to multiple fixed drills by combining a series of stepped diameters into a single tool. Manufactured in HSS and executed to a precision finish, the tool reduces tool changes and increases throughput when producing holes from 4–20 mm in thin sheet materials. The two cutting edges and the cross-ground geometry promote even cutting forces, which helps to extend tool life and maintain hole quality over repeated cycles. Cleaner holes and smoother chip flow to cut rework time A spiral flute profile channels chips away from the cutting zone, improving evacuation compared with straight-flute designs and reducing the risk of clogging. The 118° point angle supports reliable centring on flat surfaces without the need for pilot holes in many applications, while the 90° step geometry produces well-defined step shoulders. Together these features reduce burr formation and secondary finishing, saving time on de-burring and assembly preparation. Secure mounting and user-friendly handling for reliable results The shank is supplied with three flats, ensuring stable clamping and minimizing slippage in standard chucks or collets; this is especially useful when torque is variable or when interrupted cuts occur. A 22 mm effective shank length provides compatibility with most bench and pillar drill setups. The precision execution and balanced geometry mean fewer vibrations and improved hole concentricity, which supports tighter tolerances in everyday fabrication and maintenance work. For workshop-ready precision from TECWERK, contact Metav Werkzeuge for purchase or tailored technical advice via info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 2000862082NW SKU: 2000862082NW Data Step range: 4–20 mm Steps: 9 Point angle: 118° Step angle: 90° Number of cutting edges: 2 Shank length: 22 mm Special features Material: HSS Spiral-fluted (spiral nut) Cross-ground cutting edges Precision execution Shank with three flats 2 cutting edges Step drill design for stepped holes FAQ What materials can be drilled with this step drill? The TECWERK step drill in HSS is suitable for a range of common workshop materials; the combination of HSS and spiral flutes supports drilling in softer metals and many sheet materials where stepped holes are required. How does the spiral flute help in practical work? Spiral flutes improve chip evacuation, which reduces clogging and helps maintain hole quality during continuous production with the TECWERK step drill. Is a pilot hole required for accurate results? The 118° point angle provides good centring on flat surfaces; in many thin-sheet applications a pilot hole is not essential, though it can further enhance precision for critical tasks. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of the combination of durable HSS‑Co5 construction, a spiral flute for efficient chip evacuation and a secure shank with three gripping flats to reduce setup time and increase process reliability; order directly via Metav Werkzeuge or contact our consultants for application advice. Ruko Step Drill Bit 4–20 mm (HSS‑Co5) with Spiral Flute and Cross‑Ground Tip A Ruko Step Drill Bit 4–20 mm engineered to produce consecutive stepped holes in a single operation, combining cobalt‑alloyed high‑speed steel with spiral fluting and a cross‑ground 118° tip for clean starts and reliable centring *HSS‑Co5 for increased wear resistance *Spiral flute for improved chip removal *Cross‑ground 118° tip for precise centring *Covers 4–20 mm stepped hole range Faster, more efficient stepped drilling with fewer tool changes The HSS‑Co5 alloy provides enhanced red‑hardness compared with standard high‑speed steel, which supports sustained cutting performance under demanding conditions. As a result, the step drill reduces the need for frequent tool replacement and shortens production cycles. The bit's ability to deliver a continuous progression from 4–20 mm in stepped increments eliminates multiple operations with different tools, so machining sequences become simpler and throughput improves. This tangible efficiency is particularly relevant where process time and machine uptime drive production costs. Controlled chip evacuation and cleaner hole quality A spiral flute design channels chips away from the cutting edge and the hole, reducing clogging and heat build‑up during drilling. Combined with the cross‑ground geometry of the tip and its 118° angle, the tool centres reliably and initiates cuts cleanly, which helps minimise burr formation at each step. The two cutting edges maintain balanced cutting forces, supporting stable machining and consistent hole diameters across the stepped profile. For operations that prioritise repeatability, these features contribute directly to cycle stability and improved part quality. Secure clamping and robust step geometry for repeatable results The shank is provided with three gripping flats, enabling firm clamping in chucks and collets to prevent slippage during feed. The tool incorporates 9 steps with a 90° step angle, designed to produce defined step transitions while preserving flank integrity. This engineered geometry supports dependable centring and controlled material removal at each stage, which makes the bit suitable for production tasks that require precise, repeatable stepped holes. The combination of step count and geometry reduces set‑up variance and supports consistent part throughput. For detailed application guidance or to arrange procurement of Ruko step drill bits, contact Metav Werkzeuge in Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930 for tailored advice and reliable supply Technical data Article number: 4000601722NW Product: Stufenbohrer Bohrber.4-20mm HSS-Co5 Spiralnut Z.2 Stufen 9 RUKO Manufacturer: Ruko GmbH Packaging unit: 1 Core data Diameter range: 4–20 mm Tip angle: 118° Step angle: 90° Cutting edges: 2 Steps: 9 Features Material: HSS‑Co5 Spiral flute Cross‑ground tip Shank with 3 gripping flats Two cutting edges FAQ What hole sizes can be produced with this step drill bit? The Ruko step drill bit creates stepped holes across the 4–20 mm range in a single tool, allowing consecutive diameters without changing cutters. What does HSS‑Co5 mean for tool performance? HSS‑Co5 indicates a cobalt‑alloyed high‑speed steel that delivers improved heat resistance and wear performance compared with standard HSS, extending tool life under higher thermal load. How does the spiral flute affect drilling results? The spiral flute improves chip evacuation and reduces heat accumulation, supporting cleaner holes and more consistent cutting action when using the step drill. Is the tip suitable for accurate centring? Yes. The cross‑ground geometry and 118° tip angle provide reliable centring and a clean start, which helps maintain concentricity through the stepped sequence. What clamping arrangement is recommended for secure operation? Use a chuck or collet that accommodates the shank with three flats to ensure firm clamping and prevent rotation during feed; this maintains repeatable step quality. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of fast, controlled step drilling with a compact HSS design and spiral flute for reliable chip evacuation; the short 72 mm overall length and shaft with three flats ensure secure clamping in panel and control-cabinet work. Order directly via Metav Werkzeuge or contact our consultants for application advice. RUKO Step Drill Bit 4–30 mm – HSS, spiral flute, 72 mm overall length The RUKO Step Drill Bit 4–30 mm is a compact HSS step drill designed for clean hole enlargement in thin sheet and control-cabinet panels, offering precise, burr-reduced steps for rapid panel fabrication and electrical enclosure work HSS with spiral flute 4–30 mm step range Overall length 72 mm Two cutting edges, CBN-ground Shaft with 3 flats for secure clamping Consistent, fast step drilling for panel and cabinet work The combination of HSS material and a spiral flute enables continuous chip evacuation and stable cutting when enlarging holes in thin metal panels. The tool’s short design with a 72 mm overall length provides improved accessibility in confined assemblies, while the two cutting edges and CBN-ground finish ensure sharp, repeatable steps. The point geometry complies with DIN 1412‑C, giving a reliable entry and reduced wandering on flat sheets. These characteristics translate into measurable time savings for series work on control cabinets and electrical enclosures. Cleaner holes and precise step geometry for fewer reworks A 118° point angle and 90° step angle produce well-defined, concentric steps across the 4–30 mm range, reducing the need for subsequent deburring. The CBN grinding enhances flank sharpness and prolongs service life, maintaining consistent step diameters over longer runs. The spiral flute design assists in removing chips from each step quickly, which minimises heat build-up and prevents clogging that can otherwise blemish hole edges. For production environments where throughput and repeatability matter, these properties deliver clear quality advantages. Secure clamping and easy integration into workshop processes The shaft with 3 flats provides a positive grip in chucks and quick-change holders, making the tool suitable for compact drilling setups typical in panel building. The short overall length and robust HSS construction ensure controlled drilling even in handheld or limited-fixture scenarios. Maintenance is straightforward: the CBN-ground cutting surfaces retain their edge longer than conventional grinds, reducing downtime for resharpening. For installations up to 2.0 mm panel thickness this configuration combines operational ease with dependable durability. For precision panel work, select the RUKO step drill and contact Metav Werkzeuge for tailored advice and reliable supply from Emmerich – phone +49 2822 7131930 or email info@metav-werkzeuge.com Technical Data Article number: 4000601754NW Manufacturer: Ruko GmbH Packaging unit: 1 Label: Stufenbohrer 4–30 mm HSS, spiral flute, overall L. 72 mm Key measurements Step range: 4–30 mm Overall length: 72 mm Steps: 14 Cutting edges: 2 Point angle: 118° Step angle: 90° Suitable panel thickness: up to 2.0 mm Design & special features HSS material Spiral flute CBN-ground cutting edges Cross grind (Kreuzanschliff) Short version Point per DIN 1412‑C Shaft with 3 flats FAQ Which materials can be processed with this step drill? The RUKO step drill bit is intended primarily for thin sheet metal and panel work such as in control-cabinet construction; its HSS geometry is optimised for these applications and for sheet thicknesses up to 2.0 mm. Is the bit suitable for use in a handheld drill or only in a press? The short overall length and the shaft with three flats make the RUKO step drill suitable for handheld drills and compact drilling setups, though steady clamping or a drill press is recommended for highest precision. How is chip evacuation improved compared with straight-flute designs? The spiral flute profile promotes continuous chip removal from each step diameter, reducing clogging and heat build-up and yielding cleaner hole edges than straight-flute alternatives. What maintenance ensures the longest service life? The CBN-ground cutting edges retain sharpness longer; routine cleaning of flutes and avoiding excessive feed at high speeds will extend life and preserve step accuracy. What mounting options are recommended for secure clamping? Use a chuck or quick-change holder that engages the shaft’s three flats to prevent slip and to maintain concentricity during drilling. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a single HSS step drill that combines 14 precision steps with a spiral-fluted geometry for reliable holemaking and fewer tool changes; order directly from Metav Werkzeuge or consult the sales team for application advice. TECWERK Step Drill 4–30 mm, HSS, Spiral-Fluted, 14 Steps The TECWERK Step Drill 4–30 mm is a precision step drill designed for efficient enlargement of holes and stepped drilling tasks in workshops and light industrial applications. HSS precision design with 14 steps Spiral-fluted geometry for fast chip evacuation Cross-ground point, 118° for precise centring Shank with three flats, 24 mm length Consistent stepped holes with fewer tool changes The TECWERK Step Drill 4–30 mm is engineered as a single-tool solution for producing multiple diameters without repeated tool changes. The 14 steps provide a continuous progression from 4 mm up to 30 mm, which simplifies workflow and reduces setup time. The 90° step angle ensures reliable step formation, while the precision manufacturing reduces run-out and supports consistent hole geometry — an advantage when repeatability is required on production runs or repair jobs. Faster cutting and cleaner chips for improved cycle times Thanks to the spiral-fluted geometry and the cross-ground tip, the tool promotes active chip evacuation and smooth cutting action with its two cutting edges. The 118° point angle improves centring and reduces walking at the start of drilling, which in turn lowers rework and regrind rates. The combination of spiral flutes and precision ground edges results in reduced burring and cleaner holes, helping to shorten overall cycle times on thin sections and sheet operations. Secure clamping and steady feed for reproducible results The shank with three flats and a 24 mm shank length ensure stable clamping in standard chucks and reduces the risk of slipping under torque. This mechanical stability supports a controlled feed and consistent cutting engagement, which is particularly useful when exact step positions are critical. The robust shank design also simplifies fixture alignment and repeatable seating in tooling stations. Durable HSS construction and precision finish for long service life Constructed from HSS and delivered in a precision execution, the step drill balances wear resistance with the ability to be resharpened where appropriate. The cross-ground geometry aids centring and reduces thrust forces, which can prolong tool life in repetitive tasks. Routine use of appropriate cutting fluid and correct feed rates will further enhance service life and maintain hole quality, making the tool a reliable part of a workshop’s cutting tool inventory. Contact Metav Werkzeuge for tailored advice on applying the TECWERK step drill in specific workflows or to reserve stock — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 2000862083NW Manufacturer: TECWERK Packaging unit: 1 Facts Diameter range: 4–30 mm Steps: 14 Cutting edges: 2 Point angle: 118° Step angle: 90° Shank length: 24 mm Design & special features Material: HSS Spiral-fluted geometry Cross-ground point Shank with 3 clamping flats Precision execution FAQ What diameter range does the step drill cover? The TECWERK Step Drill 4–30 mm covers diameters from 4 mm up to 30 mm in stepped increments provided by its 14 steps. How many cutting edges and steps does the drill have? This step drill features 2 cutting edges and 14 steps, combining to deliver progressive diameters with stable cutting action. What advantages does the spiral-fluted design provide? The spiral-fluted geometry promotes efficient chip evacuation and smoother cutting, reducing burring and improving hole finish for the TECWERK step drill. Is the shank suitable for standard chucks? The shank with three flats and a 24 mm shank length is intended for secure clamping in standard chucks and collet systems, enhancing positional stability. What centring features does the tool have? A cross-ground tip with a 118° point angle provides improved centring and reduced walking at the start of drilling for precise step locations. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of a robust HSS construction combined with spiral chip evacuation and a 3‑flatted shank for reliable clamping; the result is efficient, repeatable step drilling across the 4–30 mm range — order via Metav Werkzeuge or consult their specialists for application guidance. RUKO Step Drill Bit 4–30 mm – HSS, Spiral Flute, 2‑cut The RUKO Step Drill Bit 4–30 mm is a multi‑step HSS cutter designed to produce stepped holes across the 4–30 mm range with controlled centring and fast chip removal HSS construction for durability Spiral flute for efficient chip evacuation Cross‑ground point for accurate centring 3‑flatted shank for secure clamping Faster holemaking with controlled step geometry The RUKO Step Drill Bit delivers progressive hole enlargement across its 4–30 mm range, reducing the need for multiple tools and tool changes. Built from HSS, the cutter retains hardness under heat and maintains cutting integrity during batch work. The 90° step angle and 118° tip angle ensure that each stage engages cleanly, while the two cutting edges balance cutting forces for smoother entry and reduced burr formation. This combination translates into measurable time savings on repetitive tasks and consistent hole dimensions for downstream assembly. Reliable centring and clean chip removal A cross‑ground point improves initial positioning and reduces walking on the workpiece, which contributes to more accurate hole placement. The spiral flute geometry actively channels chips away from the cutting zone, reducing clogging and maintaining cutting efficiency over longer runs. These features together mean fewer interruptions for clearing chips and less risk of surface damage, which supports higher first‑pass yields and lower rework rates in production environments. Secure clamping and run‑out minimisation The 3‑flatted shank provides positive engagement in standard chucks and collets, reducing slippage and run‑out compared with plain round shanks. Stable clamping preserves the tool geometry during operation, which helps retain hole concentricity and surface finish. The robust HSS body withstands repeated use and is compatible with common workshop tool holders, allowing simple integration into established machining setups and contributing to predictable process capability. Workshop advantages and supply assurance Beyond cutting performance, the step design reduces inventory complexity by covering a wide diameter range with a single tool. The combination of HSS material, spiral flute design and precise step geometry supports long service life and consistent results, making it a rational choice for production and maintenance tasks. Metav Werkzeuge’s supply and quality control from Emmerich further support dependable delivery and a clear chain of trust for workshop procurement. For tailored advice on the RUKO Step Drill Bit and to arrange supply from Metav Werkzeuge’s Emmerich warehouse, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 4000601709NW UID: 4000601709NW Product name: Step drill bit 4–30 mm HSS Packaging unit: 1 Manufacturer: Ruko GmbH Facts Drill range: 4–30 mm Steps: 14 Tip angle: 118° Step angle: 90° Cutting edges: 2 Special features Material: HSS Spiral flute (spiralgenutet) Cross‑ground point (Kreuzanschliff) Two cutting edges Shank with 3 flats FAQ What diameter range does the tool cover? The drill covers a progressive range from 4–30 mm, provided in 14 discrete steps for staged hole enlargement. How many steps are included and what does that mean for workflow? The bit has 14 steps, allowing a single tool to replace multiple drills and reducing tool changes during production. What is the material and how does it affect durability? Made from HSS, the cutter offers good wear resistance and thermal stability for typical workshop drilling tasks. How does the point geometry improve centring? The cross‑ground point and 118° tip angle aid accurate positioning and reduce walking on the workpiece, improving hole placement. What type of shank does it have and why does that matter? The 3‑flatted shank provides secure clamping and reduced run‑out, which helps maintain concentricity and finish quality when using standard chucks. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Benefit from the combination of HSS‑Co5 durability and a 14‑step range for efficient, uninterrupted holemaking; the spiral‑fluted geometry and two cutting edges deliver stable chip evacuation and precise entry. Order the tool directly via Metav Werkzeuge or consult our specialists for tailored application advice. RUKO Step Drill 4–30 mm (HSS‑Co5) — Spiral‑fluted, 14‑step drill with two cutting edges A RUKO Step Drill 4–30 mm (HSS‑Co5) engineered for progressive hole enlargement in workshop and metalworking tasks, offering reliable step transitions and secure clamping for repeatable results HSS‑Co5 for enhanced heat resistance Spiral flutes for reliable chip evacuation 2 cutting edges with 118° point angle Shank with three flats for secure clamping Reduce setup time with a single multi‑step tool The 14 steps covering 4–30 mm allow progressive enlargement without frequent tool changes, which simplifies workflow and reduces downtime. Made from HSS‑Co5, the shaft combines high‑speed steel with 5% cobalt for improved wear resistance under elevated temperatures; this means fewer replacements and more consistent output. Using one multi‑step cutter instead of several twist drills consolidates the tooling inventory and speeds production sequences, particularly for batches of varying hole sizes. Clean starts and consistent hole geometry for reliable assemblies The combination of spiral flutes, a cross‑ground tip and two cutting edges with a 118° point angle promotes precise entry and balanced cutting forces. Spiral fluting improves chip evacuation, reducing built‑up edge and the risk of clogging when stepping through material. The cross‑ground geometry helps to centre the tool at the start of drilling, resulting in cleaner holes with predictable step transitions and less need for secondary deburring operations. Secure mounting that preserves concentricity and tool life A shank with three flats ensures secure clamping in standard chucks or holders and reduces slippage under load, helping to maintain concentricity through each step. Stable clamping reduces chatter and uneven wear, which in turn keeps hole tolerances tighter and extends service life. The robust mechanical fit is particularly beneficial for repetitive production tasks where consistent accuracy is required from the first to the last hole. Built for durability and predictable workshop performance The material choice and geometrical features combine to deliver durability and predictable performance in a workshop environment. The 90° step angle defines clear step transitions for accurate sizing, while the HSS‑Co5 composition enhances heat resistance, allowing sustained penetration without rapid softening. For workshops aiming to balance efficiency with quality, this step drill offers a pragmatic solution that reduces tool change cycles and maintains consistent hole quality across multiple operations. Discuss the RUKO step drill and its suitability for specific applications with Metav Werkzeuge — our Emmerich team will advise on optimal use and supply options Technical Data Article number: 4000601723NW Manufacturer: Ruko GmbH Präzisionswerkzeuge Packaging unit: 1 Facts Step range: 4–30 mm Number of steps: 14 Point angle: 118° Step angle: 90° Cutting edges: 2 Shank flats: 3 Special features Material: HSS‑Co5 Flute: spiral‑fluted Tip: cross‑ground Design: step drill for progressive hole enlargement FAQ What hole sizes does this step drill cover? The RUKO Step Drill 4–30 mm covers a continuous range from 4 mm up to 30 mm in 14 defined steps, enabling progressive enlargement without tool changes. What does HSS‑Co5 mean for workshop use? HSS‑Co5 indicates high‑speed steel with 5% cobalt; the RUKO tool benefits from enhanced heat resistance and wear performance compared with standard HSS. How does the spiral flute affect performance? Spiral flutes improve chip evacuation during stepping and reduce clogging, which helps to maintain cutting efficiency and hole quality throughout the 14 steps. Why are three flats on the shank important? The three flats facilitate secure clamping and reduce the risk of slip in the chuck, preserving concentricity and extending tool life under repetitive use. Is the tip ground to prevent walking at start? Yes, the RUKO step drill features a cross‑ground tip with a 118° point angle that aids accurate centring and reduces walking when beginning a hole. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of the combination of high‑speed steel robustness and spiral‑fluted chip evacuation together with a cross‑ground 118° tip for reliable hole starts and consistent step sizes; order the tool directly via Metav Werkzeuge or consult our specialists for application advice. RUKO Step Drill Bit 4–39 mm — HSS spiral‑fluted stepped drill, 13 steps, two cutting edges The RUKO Step Drill Bit 4–39 mm is a stepped drill designed to create and enlarge holes in incremental sizes with a single tool, making it suitable for time‑efficient hole production and quick sizing tasks in workshop environments HSS spiral‑fluted construction Cross‑ground tip for precise starts Shank with three flats for secure clamping Accurate hole sizing with fewer tool changes The stepped design with 13 steps spanning 4–39 mm provides a practical alternative to multiple twist drills, enabling progressive enlargement of holes without repeated tool changes. The stepped geometry (step angle 90°) creates defined diameters on each level, resulting in consistent hole sizes and reduced rework. For production tasks where setup time matters, this configuration supports faster throughput and less downtime per hole. Reliable entry and cleaner finishes through improved geometry A cross‑ground tip with a 118° tip angle reduces wander at drill entry, improving first‑pass accuracy and minimising surface damage. The spiral‑fluted design actively evacuates chips from the stepped profile, which lowers the risk of clogging and helps maintain a better surface finish on each step. These features together support dependable starting behaviour and a neater hole edge, especially during serial operations. Secure clamping and stable machining performance The round shank equipped with three flats permits secure retention in chucks and allows positive torque transfer without slipping. The two cutting edges share the cutting load, which helps to balance forces and reduce vibration during drilling. Stable clamping and balanced geometry contribute to improved runout characteristics and more predictable hole quality when used in standard drill presses or compatible machine spindles. Durable HSS construction for routine workshop use Manufactured from HSS, the tool combines wear resistance with re‑grindability for extended service life under normal operating conditions. The stepped form with clearly defined 90° step angles preserves step integrity across repeated cycles, while the moderate tip geometry serves general‑purpose drilling tasks. The result is a tool that delivers reliable performance and predictable maintenance intervals, supporting economical use in maintenance and light production applications. For tailored advice on integrating the RUKO step drill into workshop workflows or to place an order, contact Metav Werkzeuge for specialist guidance and supply coordination. Technical Data Article number: 4000601712NW Item description: Stufenbohrer Bohrber.4-39mm HSS Spiralnut Z.2 Stufen 13 RUKO Manufacturer: Ruko GmbH Packaging unit: 1 UID: 4000601712NW Facts Diameter range: 4–39 mm Steps: 13 Number of cutting edges: 2 Tip angle: 118° Step angle: 90° Special features HSS material Spiral‑fluted (spiral groove) Cross‑ground tip (Kreuzanschliff) Shank with three flats for secure clamping FAQ What diameter range does the tool cover? The RUKO Step Drill Bit 4–39 mm covers diameters from 4 to 39 mm across 13 distinct steps for incremental sizing. How many cutting edges and what tip geometry does it have? The tool features two cutting edges and a 118° tip angle, with a cross‑ground geometry to improve entry behaviour. How is the shank designed for clamping? The shank includes three flats to ensure secure retention in chucks and reduce the risk of slippage during machining. What chip evacuation and finish advantages does the design offer? The spiral‑fluted profile facilitates effective chip removal from the stepped zones, contributing to cleaner hole edges and fewer clogs. Is the tool suitable for re‑grinding and routine maintenance? Constructed from HSS, the drill is suitable for standard re‑grinding practices to extend service life under routine workshop conditions. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Achieve precise, time‑saving hole production with a single tool: HSS‑Co5 construction combined with a spiral‑fluted geometry and a 118° split point delivers durable performance and low burr formation across the 4–39 mm range; order directly via Metav Werkzeuge or consult their specialists for selection advice. RUKO step drill bit — spiral‑fluted HSS‑Co5, 4–39 mm, 12 steps RUKO step drill bit designed for efficient enlargement and deburring of holes in workshop and industrial settings, offering a broad diameter range with spiral flutes for continuous chip removal HSS‑Co5 cobalt for superior wear resistance Spiral‑fluted geometry for fast chip removal 12 steps covering 4–39 mm diameter range 118° split point for precise, burr‑reduced starts Faster production with fewer tool changes The multi‑step geometry reduces setup time by replacing multiple twist drills with one step drill that covers a wide diameter span. The 12 steps from 4–39 mm allow sequential hole enlargement without reclamping, which shortens cycle times and minimises machine downtime. For production workshops this means fewer tool changes, reduced inventory complexity and a smoother workflow, while the spiral flute improves chip evacuation compared with straight‑fluted variants. Built for durability and clean hole starts Constructed from HSS‑Co5, the tool provides higher hot‑hardness and wear resistance than standard high‑speed steels, so cutting edges retain form during prolonged use. The 118° split point with cross grind reduces walking at drill start and produces cleaner entries with less burr formation. These characteristics increase first‑pass quality and reduce rework, translating into measurable gains in throughput and consistency. Secure gripping and efficient chip control The shank with 3 flats ensures secure clamping and prevents slippage in chucks and drill holders, while the spiral‑fluted profile channels chips away from the cutting zone to reduce clogging. Improved chip evacuation lowers heat build‑up at the cutting edge, extending tool life and maintaining hole quality over longer runs. The two cutting edges maintain stable cutting forces, which helps preserve machine spindle bearings and fixture integrity. Practical workshop guidance and compatibility The tool is adaptable to common drilling equipment thanks to the standard shank geometry with three flats; it fits conventional chucks and many quick‑change holders. Selection of cutting speeds and feeds should follow material‑appropriate guidelines: the HSS‑Co5 core performs well across a range of metals, and conservative parameter adjustment at first use helps identify the optimal setting for specific alloys. For buyers seeking a balance of performance and reliability, the combination of spiral flutes and cobalt alloying offers a robust solution for mixed‑material workshops. For tailored advice on the RUKO step drill and to place an order through Metav Werkzeuge in Emmerich, call +49 2822 7131930 or email info@metav-werkzeuge.com Technical data Article number: 4000601724NW Label: Stufenbohrer Bohrber.4-39mm HSS-Co5 Spiralnut Z.2 Stufen 12 RUKO Manufacturer: Ruko GmbH Packaging unit: 1 UID: 4000601724NW Facts Diameter range: 4–39 mm Steps: 12 Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: with 3 flats Special features Material: HSS‑Co5 Nut: spiral‑fluted Cross grind (split point) 2 cutting edges Stages: 12 FAQ What diameter range does this step drill cover? The RUKO step drill covers a continuous range between 4 and 39 mm across its 12 steps, enabling sequential hole enlargement without changing tools. How does the HSS‑Co5 material benefit performance? HSS‑Co5 provides improved hot‑hardness and wear resistance compared with standard high‑speed steel, so the RUKO step drill maintains cutting edge integrity under higher temperatures and longer runs. Does the tool require special clamping? No special holder is required; the shank with three flats allows secure clamping in standard chucks and many quick‑change systems, reducing the risk of slippage. What advantage does the spiral flute bring? The spiral‑fluted design promotes continuous chip evacuation away from the cutting zone, reducing clogging, heat build‑up and the likelihood of rework. Is the split point useful for hole quality? Yes. The 118° split point with cross grind reduces walking at the hole start and helps produce cleaner entries with less burr, improving first‑pass quality. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen