Combining HSS construction with a spiral-fluted geometry ensures clean hole progression and efficient chip evacuation; the short overall length and a shaft with three flats provide secure clamping for electrical cabinet work up to 2.0 mm. Order the RUKO step drill directly via Metav Werkzeuge or ask our consultants if needed. RUKO Step Drill Bit 4–12 mm (HSS, spiral-fluted, short 48 mm) A RUKO Step Drill Bit 4–12 mm engineered for precise hole enlargement in thin sheet metal and confined electrical-cabinet spaces HSS, spiral-fluted with split point Steps 4–12 mm for precise progressions Short 48 mm length for confined spaces Shaft with 3 flats for secure clamping Faster hole progression with consistent results The combination of HSS material and a spiral-fluted design delivers improved cutting action and reliable chip evacuation, which reduces heat build-up and extends service intervals. The stepped geometry covering 4–12 mm enables staged enlargement of holes without tool changes, while the two cutting edges provide balanced cutting forces and a smooth feed. For workshops prioritising throughput, this configuration reduces cycle times and minimises rework by producing consistently shaped bores. Secure clamping and ideal use for cabinet assembly A short overall length of 48 mm and a shaft with three flats ensures positive clamping in standard chucks and holders, making the bit especially suitable for control cabinet and panel assembly where space is limited. The compact design keeps the tool supported close to the chuck, which reduces vibration and improves surface finish when working in thin material. Applications up to 2.0 mm sheet thickness are covered, matching the common requirements of electrical enclosure fabrication. Precisely ground geometry for clean edges The point geometry is split-point ground in accordance with DIN 1412‑C, combined with CBN-ground flank surfaces for a sharp, wear-resistant cutting face. A 118° point angle and a 90° step angle help to centre the tool and form defined step transitions, lowering the risk of burr formation. These features translate into clean hole edges and reduced need for secondary deburring, which benefits both manual assembly and automated production environments. Practical tool guidance and maintenance notes The solid high-speed-steel body is designed for straightforward use and long service life under typical workshop conditions. The short version benefits setups where tool overhang must be minimised; however, correct clamping and recommended speeds should be observed to avoid premature wear. For matching spindle speed and feed to specific materials or to discuss consumable options, Metav Werkzeuge can provide technical advice and practical recommendations tailored to workshop processes. For precise panel drilling and expert application guidance, contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or +49 2822 7131930 to review the RUKO step drill (SKU 4000601752NW) and confirm suitability for specific sheet thicknesses Technical data Article number: 4000601752NW Label: Stufenbohrer Bohrber.4-12mm HSS Spiralnut Gesamt-L.48mm Z.2 Stufen 9 RUKO Manufacturer: Ruko GmbH Packaging unit: 1 Facts Steps: 4–12 mm Overall length: 48 mm Steps count: 9 Cutting edges: 2 Point angle: 118° Step angle: 90° Shaft: 3 flats Suitable sheet thickness: up to 2.0 mm Special features Material: HSS Flute: spiral-fluted Point: split point per DIN 1412‑C Grinding: CBN-ground Short version Ideal for control cabinet construction FAQ What hole sizes does the step drill cover? The RUKO step drill bit covers hole sizes from 4–12 mm, with defined steps that allow progressive enlargement without tool changes. Is the bit suitable for electrical cabinet work? Yes, the short overall length (48 mm) and the shaft with three flats make this bit particularly suitable for control cabinet assembly and panel work up to 2.0 mm sheet thickness. How does the split point affect performance? The split point (ground to DIN 1412‑C) improves centring and reduces walking on the material surface, which results in cleaner starts and less need for pilot holes. What are the key maintenance recommendations? Maintain secure chuck clamping, use appropriate spindle speeds for the material, and monitor wear on the CBN-ground cutting faces; these steps prolong service life and preserve hole quality. Which SKU should be referenced when ordering or requesting support? Reference SKU 4000601752NW when ordering or requesting technical advice to ensure the correct RUKO step drill configuration is supplied. Ruko GmbH: Manufacturer / Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Benefit from the combination of HSS durability and a spiral flute for efficient chip evacuation, plus the secure three-flat shank for stable clamping; order the RUKO step drill directly via Metav Werkzeuge or consult our specialists for application advice. Step drill 4–12 mm HSS — RUKO 5-step, spiral-fluted Step drill 4–12 mm HSS is a five-step high-speed steel drill designed for progressive diameter drilling with a spiral flute and a three-flat shank for reliable clamping. HSS construction for long tool life Spiral flute for smooth chip evacuation Split-point 118° for fast centring Shank with 3 flats for secure clamping Faster workflows with fewer tool changes The five-step geometry covering 4–12 mm allows sequential hole enlargement without frequent tool swaps, saving handling time and reducing setup complexity. With each step machined to precise transitions, the stepped drill ensures consistent diameters across operations; this reduces process interruptions and contributes to a more efficient production flow. The compact step progression is especially helpful where multiple hole sizes are required in short runs, improving throughput without additional tooling. Precision cutting geometry for clean, centred holes The combination of a 118° split-point and two cutting edges provides reliable centring and reduces wandering on start-up, so initial positioning is quicker and burr formation is minimised. The spiral flute assists continuous chip evacuation, lowering the risk of clogging and heat build-up at the cutting zone. These features work together to produce clean holes with defined edges and predictable finish, making the tool suitable for standard workshop and industrial drilling tasks where repeatability matters. Secure clamping and stable machining behaviour A shank with three flats offers positive gripping in keyed chucks and reduces rotational slip under load, translating torque directly into cutting action. The stepped design keeps axial forces predictable at each diameter change, helping to maintain tool life and reduce vibration. Combined with the robust HSS construction, the tool delivers dependable performance in routine applications where stability and a consistent drilling pattern are required. Practical handling and reconditioning considerations Maintenance is straightforward: keeping the cutting edges free from heavy build-up and using appropriate cutting speeds preserves geometry and prolongs service life. The tool’s two cutting edges and defined 90° step angle simplify regrinding when required, allowing for economical refurbishment rather than full replacement. For workshop managers seeking reliable tooling that balances serviceability with everyday performance, this stepped design offers a pragmatic choice. Contact Metav Werkzeuge for availability and tailored technical advice on the RUKO step drill 4–12 mm HSS — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability and delivery from Emmerich Technical data Article number: 4000601706NW Label: Stufenbohrer Bohrber.4-12mm HSS Spiralnut Z.2 Stufen 5 RUKO Manufacturer: Ruko GmbH Facts Diameter range: 4–12 mm Steps: 5 Cutting edges: 2 Point angle: 118° Step angle: 90° Shank: with 3 flats Special features Material: High-speed steel (HSS) Flute: spiral-fluted Tip: cross-ground / split-point Design: two cutting edges, five-step progression FAQ What diameters are covered by this step drill? The step drill covers diameters from 4 to 12 mm in five defined steps; the stepped progression allows sequential drilling without tool changes for intermediate sizes. How does the split-point benefit drilling performance? The 118° split-point on the RUKO step drill improves centring and reduces walking at start-up, enabling faster and more accurate hole initiation. Is the shank suitable for standard chucks? The shank features three flats for secure clamping; this design is intended to reduce slippage in keyed chucks and improve torque transmission during drilling. How many cutting edges does the tool have and what is the flute type? The tool has two cutting edges and a spiral flute, which together promote effective chip evacuation and a consistent hole finish. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a combination of precision, durability and effortless operation: the RUKO ULTIMATECUT step drill delivers fast, low-force pilot holes thanks to its FLOWSTEP® tip and maintains performance with HSS substrate and RUNaTEC coating for extended service life. Order the bit directly via Metav Werkzeuge or contact our technical advisors for application guidance. RUKO ULTIMATECUT Step Drill 5–12 mm – HSS, RUnaTEC-coated, FLOWSTEP® tip The RUKO ULTIMATECUT is a multi-step drill bit designed for fast, accurate holes in hand-held power tools and for pinpoint centring on round workpieces such as pipes HSS with RUnaTEC coating FLOWSTEP® tip for fast pilot drilling Spiral flute and cross-ground cutting 3-flat shank prevents slipping Faster pilot entry and smoother step transitions The combination of a FLOWSTEP® tip and the stepped geometry produces exceptionally fast, low-force pilot drilling. The specially shaped tip gives pinpoint centring without the need for centre punching, even on curved surfaces such as tubing, which reduces set-up time and minimises damage to the workpiece. The seamless transition between diameters created by the FLOWSTEP® technology ensures a soft, continuous cut from one step to the next, therefore decreasing vibration and producing cleaner hole edges. These design choices translate directly into fewer tool changes and a more efficient workflow when using portable drilling equipment. Robust cutting performance and extended tool life Manufactured from high-speed steel (HSS) and finished with a RUNaTEC coating, the bit combines thermal resistance with improved wear properties. The two cutting edges and cross grind deliver reliable chip formation, while the spiral flute supports efficient chip evacuation to keep the cutting zone clear. The construction enhances hot hardness and wear resistance, which—according to the manufacturer—can result in up to two times more holes compared with uncoated or conventional designs. For workshops seeking reduced tooling downtime and predictable tool life, these characteristics represent a clear operational advantage. Secure mounting and compatibility with hand-held tools A 3-flat shank prevents the bit from rotating in the chuck, improving torque transmission and reducing the risk of slippage under load. Right-hand cutting and a point angle of 118° provide a balance between rapid penetration and controlled removal of material, while the 90° step angle standardises the step geometry for repeatable hole sizes. The bit is optimised for use in hand-held electric tools, so it suits maintenance, installation and general workshop tasks where mobility and quick changeover are priorities. The design supports a calm, controlled drilling action that feels easier and quieter during operation. Practical results and improved hole quality The spiral-nuted flute combined with the precise step geometry reduces burr formation and helps achieve cleaner hole edges across the available diameter range. The stepwise increments give immediate size options without the need to stop and change tools, and the continuous cutting profile helps avoid catches when entering or leaving the material. For applications where consistent hole quality and a reduced number of finishing operations are important, the step drill offers both a time-saving and quality-improving solution. For reliable procurement and application advice on the RUKO ULTIMATECUT step drill, contact Metav Werkzeuge—our specialists will recommend the optimal variant and advise on compatibility with existing equipment; email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 4000865850NW Label: Stufenbohrer ULTIMATECUT 5–12 mm HSS RUnaTEC Manufacturer: Ruko GmbH Packaging unit: 1 Facts Diameter range: 5–12 mm Steps: 8 Cutting edges: 2 Point angle: 118° Step angle: 90° Special features HSS material RUnaTEC coating Spiral flute (spiralgenutet) Cross-ground cutting (Kreuzanschliff) FLOWSTEP® tip on all steps 3-flat shank (3-Flächenschaft) Right-hand cutting Pinpoint centring without centre punch Optimised for hand-held electric tools Improved wear resistance and hot hardness Up to 2× more holes through extended life FAQ How does the FLOWSTEP® tip improve centring and pilot drilling? The FLOWSTEP® tip creates a controlled pilot entry that enables pinpoint centring without centre punching; the RUKO ULTIMATECUT uses this geometry to reduce walking and allow fast, low-force starts even on round surfaces. Which diameter sizes are covered by this step drill? The bit covers a range from 5 to 12 mm across eight stepped diameters, providing multiple hole sizes in one tool. Is the shank suitable for standard chucks in portable drills? Yes, the 3-flat shank prevents slippage and is compatible with standard chucks commonly found on portable drilling equipment. What advantages does the RUnaTEC coating provide? RUNaTEC enhances wear resistance and hot hardness, helping to extend the service life and maintain cutting performance under thermal stress. How many cutting edges does the bit have and what is their effect? The step drill has two cutting edges with a cross grind; this creates efficient chip formation and smoother cutting action for improved hole quality. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of the combination of reliable multi-diameter drilling, efficient chip evacuation and sturdy clamping for smoother workshop workflows; order the RUKO step drill directly via Metav Werkzeuge or consult our specialists for application advice. RUKO Step Drill 5–28 mm (HSS, spiral flute, 2-cut) The RUKO Step Drill 5–28 mm is a high-performance step drill for clean, repeatable multi-diameter holes in metalworking and general workshop use HSS construction for long tool life Spiral flute for reliable chip evacuation Cross-ground tip with 118° point angle Shank with three flats for secure clamping Faster, consistent multi-diameter drilling for production The RUKO unit combines a high-speed steel (HSS) body with a spiral flute to deliver rapid material removal and reduced clogging during continuous operation. The stepped geometry (range 5–28 mm) allows several diameters to be created in a single pass, cutting set-up time and reducing tool changes. Thanks to the cross-ground tip and 118° point angle, centring is improved which lowers walk and optimises hole position. These technical choices translate into measurable productivity gains on production jobs and maintenance tasks where consistent hole quality is required. Secure clamping and precise step formation for reliable results A shank with three flats ensures positive engagement in chucks or collets, preventing slippage under higher torque. The tool’s 90° step angle and clearly defined step edges provide repeatable diameters across the seven steps, making each hole predictable and simplifying downstream processes such as reaming or tapping. With 2 cutting edges, the drill balances efficient cutting with manageable feed rates, so operators can implement straightforward machining parameters while achieving a consistent surface finish and dimensional control. Long life and practical handling in everyday workshops Constructed from HSS and finished with spiral fluting, the drill offers robustness for routine workshop use. Spiral flutes promote continuous chip evacuation, which reduces heat build-up and wear at the cutting face; this extends service intervals and lowers total tool costs over time. The combination of geometry and materials means the tool is suitable for jobs that prioritise repeatability and uptime rather than single-use specialty tasks. For users seeking predictable performance from a standardised solution, this step drill is a practical addition to tooling inventories. Choose the RUKO step drill for efficient multi-diameter drilling and contact Metav Werkzeuge for tailored application guidance and expedited supply from our Emmerich hub via info@metav-werkzeuge.com or +49 2822 7131930 Technical data Article number: 4000601714NW Label: Stufenbohrer 5–28 mm HSS spiral flute, 7 steps Packaging unit: 1 Facts Diameter range: 5–28 mm Steps: 7 Cutting edges: 2 Point angle: 118° Step angle: 90° Special features Material: HSS Spiral flute Cross-ground tip Shank with 3 flats FAQ What diameter range does the step drill cover? The RUKO step drill covers a diameter range of 5–28 mm, allowing multiple hole sizes from a single tool. How many steps and cutting edges are on the tool? The tool features 7 steps and 2 cutting edges, designed for progressive enlargement with consistent step geometry. What benefits does the spiral flute provide? The spiral flute improves chip evacuation, reducing heat and helping to maintain cutting performance over extended runs. Is the drill suitable for secure clamping in standard chucks? Yes, the shank with three flats ensures secure clamping and reduces slippage in chucks and collets. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a high-performance combination of HSS construction, spiral fluting and a 118° split point for rapid, clean hole enlargement across a wide diameter range; order directly via Metav Werkzeuge or consult the team for application advice. RUKO step drill bit 5.3–30.5 mm, HSS, spiral-fluted, 9-step RUKO step drill bit 5.3–30.5 mm for controlled enlargement of holes in sheet materials and for use with metric cable glands, offering a compact, multi-diameter solution for workshop production HSS spiral-fluted geometry for fast chip evacuation Split-point 118° for precise centring and reduced walking 9-step profile from 5.3 to 30.5 mm for versatile hole sizes Shank with three flats for secure clamping in chucks Faster hole making with fewer tool changes The 9-step profile enables a continuous increase from 5.3 to 30.5 mm, which minimises tool changes and reduces set-up time on production runs. Thanks to the spiral-fluted design, chips are evacuated more effectively, lowering heat build-up and extending tool life. This staged approach is particularly valuable for repetitive tasks in fabrication and electrical installations where multiple hole sizes are required in sequence. Accurate starts and consistent finishes for less rework A 118° split point (cross-ground tip) provides reliable centring on a variety of materials without the need for pilot holes, decreasing the risk of wandering at the start of the cut. The combination of two cutting edges and a well-defined step angle of 90° produces consistent hole edges that demand less deburring, which in turn shortens downstream finishing and inspection steps for higher throughput. Workshop-ready design for secure clamping and handling The shank with three flats gives positive retention in chucks and quick-change holders, ensuring concentricity and repeatability during machining. Constructed from HSS, the tool balances toughness and cutting performance, making it suitable for common workshop substrates and for applications involving metric cable glands. The robust design supports reliable results in both manual and machine-assisted drilling setups. Choose the RUKO step drill for dependable, versatile holemaking and contact Metav Werkzeuge in Emmerich for tailored advice or to arrange prompt supply — info@metav-werkzeuge.com | +49 2822 7131930 Technical data Article number: 4000601758NW SKU: 4000601758NW Description: HSS spiral-fluted step drill, split-point, 9 steps, shank with 3 flats Facts Diameter range: 5.3–30.5 mm Steps: 9 Cutting edges: 2 Point angle: 118° Step angle: 90° Packaging unit: 1 Special features Material: HSS Spiral flute for improved chip evacuation Cross-ground (split) point for precise centring Shank with three flats for secure clamping Suitable for metric cable glands FAQ What diameter range does the bit cover? The bit covers a diameter range of 5.3–30.5 mm, provided by the 9-step profile included with the RUKO step drill (SKU 4000601758NW). Is the tool suitable for starting holes without a pilot? Yes, the 118° split point on this RUKO step drill reduces walking and allows reliable starts on most sheet materials without a separate pilot. Which materials can be machined with this drill? The tool is made from HSS and, with its spiral flutes, is intended for common workshop materials and applications such as holes for metric cable glands. How is the tool secured in the chuck? The shank features three flats, giving positive locking and stable clamping for accurate, repeatable drilling. Does the design reduce finishing work after drilling? The combination of two cutting edges and defined step geometry helps produce cleaner holes, which typically reduces the need for extensive deburring. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Benefit from the combination of HSS construction, spiral-fluted geometry and a secure three-flat shank for efficient, burr‑free drilling in thin panels; order the tool directly via Metav Werkzeuge or consult our specialists for application advice. Step drill bit 4–20 mm HSS, spiral-fluted — RUKO The RUKO step drill bit designed for fast, precise holemaking in thin sheet and control cabinet work, featuring a short overall length and CBN-ground cutting geometry. High-speed HSS construction Spiral-fluted for fast chip evacuation CBN-ground cutting edges Three-flat shank for secure clamping Faster holemaking across a wide diameter range The compact step drill covers diameters from 4 to 20 mm in incremental steps, eliminating frequent tool changes and reducing cycle time on panel and cabinet assemblies. Its spiral-fluted design actively evacuates chips from the cutting zone, which lowers heat build-up and helps maintain consistent cutting forces. For production environments where speed and repeatability matter, this configuration translates into measurable process efficiency and fewer rejected parts. Geometry that delivers clean edges and minimal burr Precision cutting is achieved through a combination of CBN-ground flutes and a 118° tip, engineered according to DIN 1412‑C standards. The cross-ground point and a 90° step angle produce well‑formed holes with reduced burring, simplifying downstream finishing. Explaining briefly: the 118° tip concentrates cutting action at the centre, improving centring, while the 90° step angle ensures clear step transitions for reliable fastener fit and neat edge quality. Short design and secure clamping for cabinet assembly The short overall length limits deflection in thin materials and improves operator visibility when working inside enclosures. A three-flat shank provides positive drive in standard chucks and collets, preventing slippage during high-torque starts typical of panel drilling. This combination makes the tool especially suitable for electrical cabinet and control-panel fabrication up to 2.0 mm sheet thickness, where accessibility and precision are essential. Durable cutting life and straightforward handling Manufactured from HSS with two cutting edges and CBN finishing, the bit balances wear resistance with the ability to re-sharpen where appropriate, keeping life-cycle costs low. The short, robust form factor reduces the risk of breakage in demanding workshop use. For buyers seeking a reliable component for repetitive thin‑sheet work, the tool delivers consistent performance and easier process control when integrated into a well-managed production flow. Discuss suitability and delivery from Metav Werkzeuge — contact our consultants at info@metav-werkzeuge.com or call +49 2822 7131930 for tailored application support and supply from our Emmerich hub Technical data Article number (SKU): 4000601753NW Manufacturer: Ruko GmbH Packaging unit: 1 Description: Step drill bit 4–20 mm HSS, spiral-fluted, short version Core data Diameter range: 4–20 mm Overall length: 58 mm Number of steps: 9 Cutting edges: 2 Point angle: 118° Step angle: 90° Special features Material: HSS Flute: spiral-fluted Tip: cross-ground, DIN 1412‑C Finish: CBN-ground Shank: three-flat shank Short version for limited access Suitable for control cabinet construction up to 2.0 mm sheet thickness FAQ What materials can this step drill cut? The RUKO step drill bit is made from HSS and, with its geometry and CBN finish, is suited to drilling thin steel panels and common sheet materials used in control cabinet construction up to 2.0 mm. Does the tool require a special chuck? No specialised chuck is required; the three-flat shank is designed for secure clamping in standard chucks and collets commonly used in workshop and production settings. How does the CBN finish affect performance? The CBN-ground finish on the cutting edges enhances edge sharpness and wear resistance, which supports longer tool life and more consistent hole quality compared with untreated edges. Is the short design suitable for handheld drilling? Yes, the short overall length improves stability and control during handheld or bench drilling, particularly when working inside enclosures or on panels with limited clearance. What makes this tool appropriate for electrical cabinet work? The combination of a spiral flute for efficient chip removal, a short robust design to reduce deflection and a three-flat shank for secure drive makes it well suited to the requirements of control cabinet and panel fabrication. Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of the ULTIMATECUT step drill's combination of reduced cycle times and fewer tool changes for a more efficient workshop process; request product advice or place an order via Metav Werkzeuge for reliable supply and fast delivery. ULTIMATECUT Step Drill – High-performance HSS cutter with spiral flute and seven steps (RUKO) The ULTIMATECUT step drill is a multi-step HSS cutter designed for rapid hole production and reduced tool handling in general workshop and fabrication tasks. Saves up to 75% processing time Revolutionary cutting geometry Spiral flute for improved chip evacuation Seven-step design reduces tool changes Faster machining through optimised cutting geometry The ULTIMATECUT step drill delivers significant time savings by combining a revolutionary cutting geometry with multiple cutting edges. The arrangement of 4 cutting edges and the optimised rake enable progressive material removal across the steps, which reduces the need for multiple tool swaps and shortens cycle times by up to 75%. High-speed steel (HSS) construction provides a reliable balance between toughness and edge retention; HSS is suited to sustained cutting where a sharp, heat-resistant edge is required. The result is a noticeable improvement in throughput for repetitive drilling operations while maintaining consistent hole quality. Streamlined workflow and controlled hole formation A seven-step design with a 90° step angle and a 130° point angle ensures predictable step transitions and controlled initial entry into the workpiece. The spiral flute supports efficient chip evacuation, reducing clogging and heat build-up during continuous runs. Because the tool consolidates several diameter stages in a single cutter, the need for interim countersinks or multiple drills is diminished. Fewer operations translate into lower set-up times and reduced handling, which supports a smoother production flow and fewer interruptions for tool changes. Consistent hole dimensions and low-maintenance operation The defined step geometry of the cutter produces repeatable diameters across the 6–12 mm range, helping to cut rework and simplify quality checks. The multiple cutting edges distribute wear more evenly, extending service life under comparable conditions. Maintenance is straightforward: regular inspection of cutting edges and proper chip clearance are the main measures to sustain performance. The integrated geometry and material choice combine to deliver dependable hole quality and practical workshop flexibility without the complexity of specialised tooling systems. Contact Metav Werkzeuge for personalised ordering advice and to secure the RUKO ULTIMATECUT step drill; Metav's Emmerich team can be reached by phone on +49 2822 7131930 or by email at info@metav-werkzeuge.com Technical data Article number: 4000865772NW UID: 4000865772NW Manufacturer: Ruko GmbH Präzisionswerkzeuge Packaging unit: 1 Core specifications Drilling range: 6–12 mm Cutting edges: 4 Steps: 7 Step angle: 90° Point angle: 130° Time saving: up to 75% Special features Material: HSS Spiral flute Revolutionary cutting geometry No tool changes required Designed to reduce tool inventory FAQ What diameter range is covered by this step drill? The step drill covers a 6–12 mm range with defined steps across that span; the RUKO ULTIMATECUT step drill and SKU 4000865772NW list each incremental size on the tool steps. How does the spiral flute affect performance? The spiral flute promotes efficient chip evacuation and helps to reduce heat build-up and clogging during extended drilling sequences with the ULTIMATECUT tool. What do the 90° step angle and 130° point angle mean in practice? A 90° step angle provides clear step transitions for consistent diameter formation, while the 130° point angle offers controlled entry and centring behaviour when starting a hole. How many cutting edges does the cutter have and why does that matter? The cutter features 4 cutting edges, which distribute wear and enable smoother material removal; this supports longer service life and more consistent hole quality. Is the tool suitable for continuous production runs? The tool's geometry, HSS material and spiral flute are designed to support repetitive drilling tasks and extended runs with reduced interruption for tool changes. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of precise centring, extended tool life and smooth step transitions for faster, less strenuous hole-making. Order the RUKO ULTIMATECUT step drill directly via Metav Werkzeuge or contact our consultants for technical advice. ULTIMATECUT Step Drill 6–20 mm — HSS, RUNaTEC-coated, FLOWSTEP® tip (RUKO) The ULTIMATECUT step drill is a high-performance HSS tool designed for rapid, smooth step-drilling and accurate centring in hand-held and workshop applications HSS with RUNaTEC coating FLOWSTEP® tip for fast starts 3-flat shank prevents slipping Precise centring on round surfaces Faster, cleaner starts and precise centring The tool achieves reliable starts thanks to the FLOWSTEP® tip and a 118° point angle, which produce an immediate, controlled entry without the need for centre-punching. This feature enables point-precise centring even on curved workpieces such as pipes, reducing setup time and the risk of wandering. The cross-ground geometry and two cutting edges create a calm, low-vibration drilling process that keeps holes concentric and edges clean. Significantly longer life and consistent hole quality Constructed from HSS and finished with a RUNaTEC-coated surface, the step drill offers improved wear resistance and elevated hot hardness for sustained performance under load. The spiral flute evacuates chips efficiently, which helps maintain cutting conditions and extends tool life—RUKO states an increase of up to twice the number of holes compared with standard designs. The result is reproducible hole quality over longer production runs and fewer tool changes. Stable hold and smooth transitions for hand-held use A 3-flat shank prevents the tool from slipping in conventional chucks, while the right-hand cutting geometry and FLOWSTEP® technology ensure seamless transitions between diameters. The step angle of 90° and the stepped design with eight increments provide predictable material removal and minimise burr formation. This combination makes the drill particularly suitable for use in hand-held electric tools where control and safety are priorities. Practical advantages for workshop workflows Beyond raw performance, the step drill simplifies operations: one tool covers a range from 6–20 mm, reducing the need for multiple twist drills and deburring steps. The two cutting edges and spiral flute support steady chip removal, so operators experience less effort and improved cycle times. For mixed production environments or on-site tasks, the compact handling and anti-slip shank support efficient, repeatable results. Contact Metav Werkzeuge today to secure the RUKO ULTIMATECUT step drill for precise, long-life step drilling — call +49 2822 7131930 or e‑mail info@metav-werkzeuge.com for tailored advice and ordering support Technical Data Article number: 4000865851NW Manufacturer: Ruko GmbH Core data Diameter range: 6–20 mm Steps: 8 Point angle: 118° Step angle: 90° Cutting edges: 2 Special features Material: HSS Coating: RUNaTEC Flute: spiral flute Tip: FLOWSTEP® Shank: 3-flat shank Cross-ground geometry Right-hand cutting Suitable for hand-held power tools FAQ What diameter range does the step drill cover? The RUKO ULTIMATECUT step drill covers a diameter range of 6–20 mm in eight steps, allowing a single tool to produce multiple hole sizes. Is centre-punching required for accurate starts? No. The FLOWSTEP® tip and 118° point angle enable point-precise centring without centre-punching, including on round surfaces such as pipes. How does the RUNaTEC coating affect performance? The RUNaTEC coating increases wear resistance and hot hardness, which contributes to longer tool life and more consistent hole quality under demanding conditions. Can this tool be used in hand-held drills? Yes. The 3-flat shank prevents slipping in common chucks and the design is optimised for hand-held electric tools, providing a secure, calm drilling experience. What features improve chip evacuation and surface finish? The spiral flute combined with two cutting edges promotes effective chip evacuation and stable cutting, resulting in cleaner hole edges and reduced burr formation. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

The combination of HSS construction, a 6–20 mm working range and the RUNaTEC cutting geometry delivers genuine time savings and fewer tool changes — a clear advantage for high-throughput fabrication. Order the RUKO ULTIMATECUT step drill directly via Metav Werkzeuge or request technical clarification from the consultants. ULTIMATECUT Step Drill 6–20 mm HSS with RUNaTEC Spiral Flute by RUKO The ULTIMATECUT step drill is a consolidated drilling solution for progressive hole sizes, engineered to speed up production and reduce tool inventory in workshop and fabrication environments. 6–20 mm range in one tool Up to 75% time saving in processing HSS with spiral flute Four cutting edges, 130° tip angle Faster output through integrated step drilling The ULTIMATECUT design combines multiple diameters in a single tool to replace a sequence of individual drills, enabling noticeably faster cycle times. Thanks to HSS construction and the RUNaTEC cutting geometry, the tool achieves up to 75% time saving in many workflows by removing the need for tool changes. The 6–20 mm span covers a wide range of common hole sizes, which supports inventory reduction and streamlines machine set-ups. This paragraph focuses on measurable efficiency gains and how the tool's configuration translates into a leaner production process. Precision steps and reliable chip management Key features such as the four cutting edges, 90° step angle and 130° tip angle combine to produce well-defined step transitions and improved centring for successive hole diameters. The spiral flute assists effective chip evacuation, reducing heat build-up and promoting consistent surface finishes during continuous operation. These technical characteristics contribute to stable performance and minimise the risk of rework, supporting productivity targets in repetitive drilling tasks. Practical benefits for workshop logistics and flexibility By consolidating several drilling operations into one implement, the tool supports tool consolidation and greater flexibility at the bench or on the machine. Fewer tool changes lead to a smoother workflow and less downtime, which is particularly advantageous in small-batch and mixed-production settings. For procurement, the presence of a single, multi-diameter solution reduces storage needs and simplifies order routines; technical guidance and specification clarification are available through Metav Werkzeuge if required. For specification checks or to secure stock of the RUKO ULTIMATECUT step drill, contact Metav Werkzeuge in Emmerich: info@metav-werkzeuge.com | +49 2822 7131930 Technical Data Article number: 4000865773NW Label: Stufenbohrer ULTIMATECUT Bohrber.6-20mm HSS RUnaTEC Spiralnut Z.4 Stufen 8 RUKO Manufacturer: Ruko GmbH Packaging unit: 1 Facts Working range: 6–20 mm Cutting edges: 4 Step angle: 90° Tip angle: 130° Special features Material: HSS Geometry: RUNaTEC cutting geometry Flute: spiral flute Packaging unit: 1 FAQ What diameters are covered by this step drill? The step drill covers diameters from 6–20 mm, enabling a range of hole sizes without tool changes; the specification is listed for the RUKO ULTIMATECUT (SKU 4000865773NW). How many cutting edges and which angles does the tool use? The tool has four cutting edges, a 90° step angle and a 130° tip angle, which together provide defined step transitions and reliable centring performance. What material is the tool manufactured from? The drill is made of HSS, chosen for a balance of toughness and wear resistance suitable for multi-step drilling operations. How does the RUNaTEC geometry affect machining? RUNaTEC geometry refines the cutting geometry to improve material removal and reduce the need for multiple tools, contributing to efficiency and the reported time savings. What role does the spiral flute play in performance? The spiral flute supports continuous chip evacuation, which helps to control heat and maintain consistent cutting conditions across the entire stepped profile. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of the durable HSS construction and the spiral flute design to achieve fast, consistent step drilling across a wide diameter range; the split point and 2 cutting edges deliver precise starts and reduced walking — available through Metav Werkzeuge for straightforward supply or technical advice. RUKO Step Drill 6–26.75 mm — HSS, Spiral Flute, 8 Steps The RUKO step drill is a high-performance HSS stepped twist drill designed for progressive hole enlargement and quick stepwise drilling in thin materials and sheet work. HSS construction for long tool life Spiral flute for efficient chip evacuation 2 cutting edges with 118° point angle Shank with 3 flats for secure clamping Faster, cleaner holes with fewer tool changes The stepped geometry enables multiple diameters in a single tool, reducing cycle time by avoiding repeated tool changes. The 6–26.75 mm diameter range across 8 steps provides a compact solution for progressive hole sizing, while the 90° step angle ensures defined transitions between diameters. The combination of stepped design and spiral flute promotes continuous chip flow, which lowers heat build-up and preserves edge life. For workshops aiming to improve throughput, this tool reduces handling and increases consistency in serial operations. Reliable centring and controlled entry for accurate drilling A 118° point angle with cross grind (split point) improves initial centring and reduces walking on smooth surfaces, so holes start more accurately and require less pilot work. The 2 cutting edges distribute cutting forces evenly, providing smoother penetration and predictable torque. The shank with 3 flats offers secure clamping in chucks or collets, minimising slippage during higher feed rates. Together these features support repeatable hole quality and lower scrap rates in production and repair tasks. Durable HSS composition for industrial use The HSS material balances toughness and wear resistance, making the tool resilient under typical workshop conditions and suitable for frequent use. The spiral flute geometry, combined with the split point, assists with chip evacuation and reduces the risk of clogging during interrupted cuts. Maintenance is straightforward: resharpening can restore geometry where applicable, and the robust construction supports reliable performance over many cycles, which helps to keep downtime and tooling costs predictable. Practical benefits that streamline workshop work Using a multi-step drill simplifies inventory and tool management: fewer tools are needed to cover a range of hole sizes, which lowers setup times and storage complexity. The clear step transitions and secure clamping enable quick alignment and repeatable results across batches, supporting both ad hoc repairs and scheduled production runs. The tool’s specification focuses on functional performance—spiral flute, split point, 2 cutting edges—to deliver measurable improvements in drilling speed and hole consistency. For robust step drilling with RUKO’s proven HSS design, contact Metav Werkzeuge for tailored ordering and swift delivery from Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 4000601711NW Label: Stufenbohrer Bohrber.6-26,75mm HSS Spiralnut Z.2 Stufen 8 RUKO Manufacturer: Ruko GmbH Facts Diameter range: 6–26.75 mm Steps: 8 Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: 3 flats Special features HSS material Spiral flute Cross grind / split point Stepped twist drill design Brand: RUKO FAQ What diameter range does the step drill cover? The tool covers a diameter range of 6–26.75 mm across 8 steps, enabling multiple hole sizes with a single cutter. What advantages does the split point offer? The 118° split point improves centring and reduces walking at the drill entry, resulting in quicker starts and more accurate holes with the RUKO step drill (SKU 4000601711NW). How does the spiral flute affect performance? The spiral flute promotes continuous chip evacuation, which reduces heat and helps maintain cutting efficiency and edge life during progressive drilling. Is the shank suitable for secure clamping? Yes; the shank features 3 flats for reliable clamping in chucks or collets, minimising slippage during higher feed operations. Can this tool replace multiple conventional drills in a workshop? The stepped design is intended to reduce the number of separate drills required for a range of hole sizes, simplifying tool management and lowering setup times. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Combine the up to 75% time saving, robust HSS construction and integrated RUNaTEC spiral flute for fewer tool changes and a faster throughput — order directly via Metav Werkzeuge or consult the Metav specialists for specification support. ULTIMATECUT Step Drill 6–27 mm, HSS, RUNaTEC Spiral Flute — RUKO The ULTIMATECUT step drill is a multi-step HSS cutter engineered for rapid drilling from 6–27 mm, offering an efficient alternative to multiple single-diameter tools. Up to 75% faster drilling HSS construction for robust cutting RUNaTEC spiral flute for chip evacuation Four cutting edges and 8 steps for range coverage Faster cycle times with demonstrable efficiency The combination of a revolutionary cutting geometry and an optimised flute design delivers a measurable productivity gain: up to 75% time saving is achieved by reducing tool changes and combining several diameters in one tool. This means a single HSS step cutter replaces multiple conventional drills, shortening process chains and reducing handling. The compact diameter range of 6–27 mm in one tool allows continuous progression through hole sizes without interrupting the machining cycle, resulting in faster setup and higher machine utilisation. Less handling, simpler inventory, smoother production By integrating eight progressive diameters into a single tool with four cutting edges, logistics are simplified and downtime from tool changes is minimised. The result is fewer items to manage in the tool cupboard, less fixture disturbance and a leaner procurement process. The spiral-nuted RUNaTEC design supports continuous chip removal, which maintains consistent cutting conditions across each step and reduces the risk of chip-related interruptions during runs. Consistent hole quality and reliable geometry The defined 90° step angle and 130° point angle ensure repeatable entry characteristics and steady advancement through sheet or plate work. The geometry, together with the spiral flute, supports clean evacuation of swarf and helps maintain dimensional stability from the smallest to the largest step. This engineered form leads to uniform hole edges and reduces the need for secondary deburring, conserving finishing time in serial production. Industrial specification and practical integration Manufactured to meet workshop and production standards, the tool’s HSS substrate balances toughness and sharpness retention for industrial use. The RUNaTEC spiral-nuted configuration and the arrangement of cutting edges facilitate high-feed operation and continuous drilling sequences, providing a practical tool for assembly lines and jobbing workshops alike. The design intention is clear: fewer interruptions, consistent output and streamlined tool handling for production environments. For procurement, technical specification or order placement of RUKO ULTIMATECUT step drills, contact Metav Werkzeuge GmbH in Emmerich at +49 2822 7131930 or info@metav-werkzeuge.com for reliable supply and expert advice Technical data Article number: 4000865774NW Description: Stufenbohrer ULTIMATECUT Bohrber.6-27mm HSS RUnaTEC Spiralnut Z.4 Stufen 8 RUKO Manufacturer: Ruko GmbH Packaging unit: 1 UID: 4000865774NW Facts Diameter range: 6–27 mm Material: HSS Cutting edges: 4 Steps: 8 Step angle: 90° Point angle: 130° Special features RUNaTEC spiral flute Revolutionary cutting geometry Up to 75% time saving No tool changes required Multi-step coverage in one tool FAQ What diameter range does this drill cover? The ULTIMATECUT step drill covers a diameter range of 6–27 mm, allowing progressive drilling without tool changes. How does the tool reduce machining time? The combination of integrated diameters, four cutting edges and the RUNaTEC spiral flute reduces tool changes and improves chip evacuation, which leads to the reported up to 75% time saving in many applications. How many steps and cutting edges are included? The tool features 8 steps and 4 cutting edges, designed for sequential enlargement of holes with consistent cutting behaviour. Which material is the step drill made from? The body is manufactured from HSS, chosen for its balance of toughness and cutting performance in production environments. Is the ULTIMATECUT suitable for continuous production runs? Yes, the combination of robust HSS construction, controlled geometry and spiral chip removal makes the ULTIMATECUT appropriate for sustained production use; reference SKU 4000865774NW for ordering. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of the combination of durable HSS construction, spiral flute chip evacuation, and a shank with three flats for consistent, secure step drilling; order via Metav Werkzeuge or consult our advisors for application-specific guidance. RUKO Step Drill 6–30.5 mm – HSS, spiral flute, 9-step design The RUKO Step Drill 6–30.5 mm is an HSS step drill featuring a spiral flute and cross-ground tip, engineered for progressive hole enlargement with defined step geometry and secure clamping. HSS construction for durable performance Spiral flute for efficient chip evacuation Cross-ground 118° tip for accurate centring Shank with three flats for secure clamping Consistent stepwise holemaking for reliable production results The stepped profile provides nine defined drilling diameters across the 6–30.5 mm range, enabling fast progression from pilot to final size without tool changes. The 90° step angle controls material removal at each increment, which helps produce neat edges and predictable hole tolerances. Using a single multi-step tool reduces set-up time and minimises tool inventory, supporting workflow efficiency and repeatable results in batch production. Faster cutting and improved chip control for longer run times A spiral flute directs chips away from the cutting zone, reducing heat build-up and the likelihood of clogging during continuous operation. Combined with two cutting edges and a cross-ground 118° tip, the geometry promotes reliable centring and smooth entry into the material. This efficient chip evacuation and accurate tip geometry together contribute to lower rework rates and fewer interrupted cycles on the machine. Secure clamping and straightforward integration into existing tooling The tool’s shank with three flats ensures positive engagement in conventional chucks and collets, preventing slippage under torque and allowing stable concentricity during drilling. Constructed from HSS, the tool offers robust wear resistance for routine workshop use and is compatible with standard machining procedures. The combination of secure mounting and proven materials supports predictable tool life and consistent hole quality. For precise application advice or to acquire the RUKO step drill via Metav Werkzeuge, contact Metav Werkzeuge for tailored recommendations and ordering support at info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 4000601715NW Designation: RUKO step drill 6–30.5 mm HSS spiral flute, 9 steps Packaging unit: 1 Facts Diameter range: 6–30.5 mm Steps: 9 Cutting edges: 2 Tip angle: 118° Step angle: 90° Special features Material: HSS Spiral flute Cross-ground tip Shank with three flats FAQ What diameter range does the tool cover? The RUKO step drill covers a diameter range from 6 to 30.5 mm across nine defined steps. How many cutting edges and steps does the tool have? The RUKO step drill features two cutting edges and nine steps for progressive enlargement. What are the tip and step angles of the drill? The tool is specified with a 118° cross-ground tip and a 90° step angle to ensure reliable centring and clean step transitions. How does chip removal work with this design? Chip removal is facilitated by the spiral flute geometry, which guides swarf away from the cutting zone for reduced heat and fewer blockages. What clamping interface is provided for secure mounting? The RUKO step drill is supplied with a shank featuring three flats to ensure secure clamping and reduced slippage in standard chucks and holders. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of robust HSS construction and a spiral-fluted, 9-step design for reproducible stepped holes; combine precise centring with secure clamping for efficient workshop production. Order the RUKO step drill directly via Metav Werkzeuge or consult our specialists for application advice. RUKO Step Drill 6–32 mm (HSS) — Spiral-Fluted, 9-Step A RUKO Step Drill 6–32 mm (HSS) engineered for clean, stepped hole creation and reliable clamping in industrial and workshop settings High-speed steel (HSS) construction Spiral-fluted design for efficient chip removal 118° point angle for accurate centring Shank with three flats for secure clamping Reliable cutting performance with reduced walking The stepped bit is manufactured from high-speed steel (HSS) and finished with a cross-ground point, which stabilises starts and reduces lateral drift during engagement. The 118° point angle improves initial centring on unpunched surfaces, while the pair of cutting edges maintains a consistent cut geometry across each step. These technical choices result in predictable removal rates and less rework, so production cycles run more smoothly and tool change frequency is reduced. Efficient chip evacuation and step geometry for repeatability A spiral flute redirects chips away from the cutting zone, lowering heat build-up and reducing clogging between steps. The tool’s 9-step geometry with a 90° step angle provides clearly defined diameters for incremental hole expansion; this enables one-pass sizing where applicable and supports reproducible hole finishes. The shank with three flats ensures reliable gripping in standard chucks or holders, improving torque transmission and minimising slippage under load. Practical handling and workshop integration Supplied as a single unit, the stepped drill is designed for straightforward integration into existing machining routines. Routine sharpening is feasible on the two cutting edges, and the spiral flute design aids cleaning and inspection. Technical terms such as "spiral-fluted" refer to the helical groove that channels swarf away from the cutting face; the cross-ground point denotes a split-style tip that aids self-centring. These features simplify day-to-day use and lower the learning curve for operatives when introducing a stepped drilling process. For specification checks, supply options or application recommendations for the RUKO step drill, contact Metav Werkzeuge in Emmerich by phone or email to receive tailored advice and ensured availability. Technical data Article number: 4000601719NW SKU: 4000601719NW Description: Stufenbohrer 6–32 mm, HSS, spiral-fluted, 9 steps Manufacturer: Ruko GmbH Packaging unit: 1 Core measurements Diameter range: 6–32 mm Steps: 9 Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: three flats Design and special features Material: high-speed steel (HSS) Flute: spiral-fluted Tip: cross-ground point Geometry: 9-step design Shank: with 3 clamping flats FAQ What diameter range does this stepped drill cover? The stepped drill covers diameters from 6 to 32 mm and is designed as a 9-step tool for incremental hole enlargement. How does the spiral flute benefit cutting? The spiral flute on the RUKO step drill channels chips away from the cutting zone, improving heat dissipation and helping to maintain a consistent cutting action across each step. Is special clamping required for this shank design? No special holder is required; the shank with three flats offers improved grip in standard chucks and collets to reduce slippage during drilling. What advantage does the 118° point angle offer? A 118° point angle, combined with the cross-ground tip, enhances self-centring on initial contact and decreases the tendency to wander when starting a hole. Can the cutting edges be resharpened? The stepped drill’s two cutting edges are suitable for resharpening by an experienced tool service, which restores geometry and extends service life. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a hardened HSS construction combined with spiral fluting and a cross-ground 118° tip for fast, clean step drilling and reliable centring; order directly via Metav Werkzeuge or consult our specialists for application advice. RUKO Step Drill Bit 6–37 mm — HSS spiral-fluted, 2-cut, 12-step A RUKO step drill bit 6–37 mm for progressive hole diameters, engineered for efficient step drilling and secure clamping in workshop and production settings HSS construction for long tool life Spiral fluting for fast chip evacuation Cross-ground 118° tip for accurate centring Shank with 3 clamping flats for secure grip Faster, more predictable step drilling for reduced cycle times The HSS material and two cutting edges deliver a balance of toughness and sharpness that is particularly beneficial where repeatable results matter. The spiral flute promotes efficient chip evacuation, which reduces clogging and heat build-up; this results in smoother cutting and a lower risk of material deformation. The combination of a cross-ground tip and a defined 90° step angle enables accurate step transitions so that hole diameters are formed consistently, lowering the need for secondary operations and saving time on the production line. Secure setup and reliable clamping for consistent results A shank with three clamping flats provides a positive mechanical interface with chucks and holders, reducing slippage under higher torque. This design, together with the spiral-grooved geometry, supports stable running and predictable force distribution during drilling. The tool’s geometry is optimised to begin cutting cleanly without excessive walking, so setup effort is reduced and first-off quality improves—an advantage in small-batch and repetitive manufacturing processes alike. Durable geometry and clear benefits for workshop use With 12 distinct steps covering a diameter range from 6–37 mm, the stepped design minimises tool changes for incremental hole enlargement tasks. The 118° point angle ensures reliable centring and smooth engagement, while the spiral groove and two-cut layout preserve edge life under normal working conditions. This combination was conceived to support both hand-held and machine-mounted operations, delivering repeatable hole profiles and fewer rejects over extended use — a pragmatic choice for workshops seeking precision without constant retooling. Contact Metav Werkzeuge to discuss the RUKO step drill bit and secure tailored purchasing and technical advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical Data Article number: 4000601716NW Name: Step drill bit 6–37 mm HSS spiral-fluted 2 cuts 12 steps RUKO Manufacturer: Ruko GmbH Präzisionswerkzeuge Packaging unit: 1 Core specifications Diameter range: 6–37 mm Number of steps: 12 Tip angle: 118° Step angle: 90° Cutting edges: 2 Flute: spiral-fluted Shank: 3 clamping flats Material: HSS Features Cross-ground tip for precise starts Spiral groove for chip evacuation Shank with three flats for secure clamping Two cutting edges for efficient cutting action FAQ What diameter range is covered by this step drill bit? The RUKO step drill bit covers diameters from 6 to 37 mm, allowing progressive enlargement without frequent tool changes. How many steps does the tool include? The tool features 12 steps, enabling multiple hole sizes to be produced with a single tool. What is the point and step geometry? The design includes a 118° point angle and a 90° step angle; these dimensions on the RUKO stepped drill promote accurate centring and defined step formation. What shank type is used for clamping? A shank with three clamping flats is provided to improve grip in chucks and reduce the risk of slippage during operation with the RUKO step drill bit. Which material is the tool made from and what does that mean for durability? Constructed from HSS, the RUKO step drill bit combines hardness with toughness, offering sustained cutting performance and resistance to wear under common workshop conditions. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of a durable HSS‑Co5 construction combined with a spiral flute and cross‑cut tip to achieve smooth, progressive hole enlargement from 6–37 mm; the 12‑step geometry and three‑flat shaft ensure predictable clamping and consistent concentricity. For purchase or technical consultation, order via Metav Werkzeuge or consult the technical team. RUKO step drill 6–37 mm — HSS‑Co5, spiral‑fluted, 12 steps The RUKO step drill 6–37 mm is a precision step drill designed for progressive hole enlargement with defined step geometry and efficient chip evacuation, suitable for workshop and light industrial use HSS‑Co5 solid‑cobalt construction Spiral flute for efficient chip removal Two cutting edges with cross‑cut tip Shaft with three clamping flats Faster, controlled step drilling for reliable throughput The spiral‑fluted step drill delivers a consistent drilling sequence across its 6–37 mm range, reducing the need for multiple tools and retooling. The HSS‑Co5 substrate provides enhanced red‑hardness and wear resistance compared with standard high‑speed steel, which translates into longer service intervals and steadier hole quality. The 118° point angle and cross‑cut tip support precise centring and reduced walking at the start of each step, while the two cutting edges maintain symmetrical cutting forces for even material removal. This combination reduces cycle times and supports stable production flow in repetitive drilling operations. Robust geometry that simplifies set‑up and repeatability A defined 90° step angle and clearly dressed step edges produce reproducible hole diameters with minimal deburring between steps. The shaft with three clamping flats ensures secure fixation in chucks or collets, preventing slippage and maintaining concentricity during machining. The 12 distinct steps allow incremental hole enlargements without frequent tool changes, enabling efficient processing sequences. These design features together mean fewer interruptions, predictable output, and lower tool handling time for workshops seeking consistent results from each drilling task. Practical handling and predictable chip control The spiral flute geometry promotes continuous chip evacuation along the flutes, reducing heat build‑up and clogging in longer drilling cycles. The cross‑cut regrinds at the tip assist chip formation for cleaner edges, which simplifies any subsequent finishing operations. Ergonomic considerations such as the three‑flat shank support quick mounting and alignment in standard toolholders. Supplied as a single unit, the tool package is compact and straightforward to integrate into existing tool sets, helping to streamline inventory while maintaining a broad hole‑making capability. Contact Metav Werkzeuge for tailored advice or to secure the RUKO step drill 6–37 mm with HSS‑Co5; technical consultants are available at info@metav-werkzeuge.com or +49 2822 7131930 Technical data Article number: 4000601725NW Name: RUKO step drill 6–37 mm HSS‑Co5 spiral‑fluted 2 cutting edges Facts Diameter range: 6–37 mm Steps: 12 Point angle: 118° Step angle: 90° Number of cutting edges: 2 Special features Material: HSS‑Co5 Flute: spiral‑fluted Tip: cross‑cut grind Shank: with 3 clamping flats FAQ What hole sizes does this step drill cover? The step drill covers a continuous range from 6–37 mm across 12 defined steps, allowing progressive enlargement without tool changes. What does HSS‑Co5 indicate for tool performance? HSS‑Co5 denotes a cobalt‑alloyed high‑speed steel that offers increased red‑hardness and wear resistance compared with standard HSS, improving tool life under higher temperatures. How do the spiral flutes affect drilling? Spiral flutes promote efficient chip evacuation along the flute path, reducing clogging and heat‑related wear during extended drilling sequences. Why is the 118° point angle important? The 118° point angle with a cross‑cut tip enhances centring and reduces walking at start‑up, helping to produce accurate holes from the first pass. What is the purpose of the three‑flat shank? The shank with three clamping flats ensures secure fixation in chucks or collets and improves concentricity during machining. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of a compact, versatile drilling solution that reduces tool changes and speeds panel work: the combination of a wide 6.5–32.5 mm step range, robust HSS construction and a spiral-fluted design delivers efficient chip evacuation and consistent hole quality. Order via Metav Werkzeuge or consult the team for application advice. RUKO Step Drill 6.5–32.5 mm — HSS, Spiral-fluted, 9 Steps RUKO Stufenbohrer Bohrber.6,5-32,5mm HSS Spiralnut Z.2 Stufen 9 is a step drill designed for preparing metric cable gland entries and rapid sheet-metal hole sizing HSS high-speed steel for long tool life Spiral-fluted for fast chip evacuation Cross-ground point for clean hole entry Shank with three flats for secure clamping Faster process flow through fewer tool changes The wide 6.5–32.5 mm step coverage in nine increments enables a single tool to produce a variety of hole diameters, which reduces machine downtime and the need for multiple drills. The combination of HSS material and a spiral-fluted geometry supports continuous drilling performance by aiding chip removal and lowering heat build-up; this translates directly into higher throughput and fewer interrupted production cycles. For panel fabrication and electrical enclosures, this means more holes per shift with fewer tool swaps. Accurate entry and repeatable holes for cable glands A cross-ground point with a 118° tip and a 90° step angle produces precise start points and defined step transitions, reducing burr formation and the need for secondary deburring. The two cutting edges provide stable cutting action while the shank with three flats ensures reliable clamping in chucks or collets, improving concentricity and repeatability. Such features make this step drill particularly suited to metric cable gland preparation and similar repetitive hole-making tasks where consistency matters. Practical durability and simple handling for everyday workshop use Constructed from HSS and featuring nine distinct steps, the tool balances longevity with versatility. The spiral flute not only assists chip evacuation but also helps maintain a cooler cutting zone, extending edge life under typical panel-working conditions. The stepped design removes the need for multiple size-specific drills, simplifying inventory and tool management. For any uncertainty about compatibility with specific panels or gland sizes, Metav Werkzeuge provides technical advice and data to support the selection process. Contact Metav Werkzeuge for detailed availability and tailored application guidance — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930 Technical data Article number: 4000601759NW Description: Stufenbohrer Bohrber.6,5-32,5mm HSS spiral-fluted two cutting edges 9 steps RUKO Manufacturer: Ruko GmbH Präzisionswerkzeuge Packaging unit: 1 UID: 4000601759NW Facts Drill range: 6.5–32.5 mm Steps: 9 Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: with 3 flats Special features HSS high-speed steel Spiral-fluted Cross-ground (Kreuzanschliff) Designed for metric cable glands Two cutting edges RUKO brand step drill FAQ What hole sizes does this step drill cover? The RUKO step drill covers hole diameters from 6.5 to 32.5 mm in nine incremental steps (SKU 4000601759NW), allowing a single tool to produce multiple standard gland sizes. Is the tool suitable for cable gland preparation? Yes — it is specified for metric cable glands and is designed to produce the frequently required hole diameters cleanly and efficiently. How is the drill secured in the machine? The tool features a shank with three flats to ensure secure clamping in a chuck or collet, which improves concentricity and reduces slippage during drilling. What cutting geometry does it use to ensure clean holes? The drill has a cross-ground point with a 118° tip and a 90° step angle, which promotes precise hole entry and limits burr formation. Does the tool have a coating? No coating is indicated in the technical data; the tool is manufactured from HSS and relies on its material and flute geometry for performance. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Take advantage of durable, high-performance drilling with a tool that combines high-speed steel construction, spiral flute chip evacuation and an 11-step range for fewer tool changes; order the part directly via Metav Werkzeuge or consult the Metav team for application advice. RUKO Step Drill Bit 6.5–40.5 mm – HSS, spiral flute, 11 steps The RUKO Step Drill Bit 6.5–40.5 mm is a stepped drill designed for fast, accurate holemaking and enlarging in metric cable gland applications and thin sheet materials High-speed steel construction Spiral flute for efficient chip removal 118° split point for fast centring Shank with three flats for secure clamping Consistent hole sizes with fewer tool changes The stepped geometry delivers a continuous diameter progression from 6.5–40.5 mm, allowing progressive enlargement without repeated tool swaps. This results in a more efficient workflow and reduced setup time in production or workshop environments. The eleven-step profile, specified as 11 steps, maintains concentricity across the drilling process, which is especially valuable when preparing holes for metric cable glands, where diameter accuracy and edge quality influence sealing and thread engagement. Faster centring and improved start behaviour A 118° split point with cross-ground geometry ensures reliable self-centring and reduces wandering on thin or coated materials. The cross grind refines the cutting edges to lower feed forces and avoid tear-out at hole entry, so centre-punching is often unnecessary. Combined with the spiral flute, which promotes continuous chip transport away from the cutting zone, the design supports sustained cutting at moderate feeds and mitigates heat build-up that can blunt edges prematurely. Secure clamping and predictable performance The shank with three flats provides positive gripping in chucks and collets, minimising slippage during high-torque operations. Constructed from high-speed steel (HSS), the bit balances toughness and hardness for general-purpose cutting in sheet metals and related materials. The tool’s two cutting edges are optimised for smooth diameter transitions; this reduces rework and improves repeatability when multiple holes of differing sizes are required in the same component. Practical handling and maintenance for the workshop Routine reconditioning is straightforward: light sharpening of the cutting lips will restore the split point geometry without complex regrinding. The spiral-fluted design aids visual chip inspection, enabling quick assessment of tool condition during use. Supplied as a single unit (packaging unit 1), this stepped drill is a compact solution for maintenance departments and fabrication shops seeking an economical way to cover a broad hole-size spectrum without a set of individual drills. For reliable supply and tailored advice on the RUKO step drill bit, contact Metav Werkzeuge in Emmerich — Metav’s specialists can confirm suitability for specific applications and arrange delivery from stock; email info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 4000601761NW Packaging unit: 1 Manufacturer: Ruko GmbH Core specifications Diameter range: 6.5–40.5 mm Number of steps: 11 Point angle: 118° Step angle: 90° Cutting edges: 2 Shank: 3 flats Materials & features Material: high-speed steel (HSS) Spiral flute Cross-ground (split) point Intended for metric cable gland holes Two cutting edges for smooth step transitions FAQ What diameter range does this stepped drill cover? The RUKO step drill bit covers a diameter range of 6.5–40.5 mm (SKU 4000601761NW) and increments through eleven predefined steps for progressive hole enlargement. Is the bit suitable for quick centring on thin sheet material? Yes, the 118° split point and cross-ground geometry on the RUKO stepped bit deliver fast centring and reduced walking on thin or coated sheets. How is chip evacuation handled with this tool? The spiral flute design directs chips away from the cutting zone, improving chip control and reducing heat accumulation during drilling. Can the shank be gripped securely in standard chucks? The shank with three flats provides a positive grip in chucks and collets, lowering the risk of slippage under load when using the RUKO step drill bit. Which material is the tool made from and what does that mean for durability? Made from high-speed steel (HSS), the tool offers a balance of toughness and edge retention suitable for general workshop tasks and repeated use. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Combining HSS construction, RUNaTEC coating and the FLOWSTEP® tip delivers fast, precise drilling with noticeably extended tool life. The integrated 3‑flat shank and spiral flute ensure secure clamping and a calm drilling action in hand‑held tools. Order the step drill bit directly via Metav Werkzeuge or ask our consultants if needed. Step drill bit ULTIMATECUT 8–30 mm — RUKO (HSS, RUnaTEC‑coated, FLOWSTEP®) The Step drill bit ULTIMATECUT 8–30 mm is a high‑performance HSS step drill for efficient, accurate step drilling in thin workpieces and cylindrical surfaces, optimised for use in handheld power tools. HSS with RUnaTEC coating FLOWSTEP® tip for smooth transitions 3‑flat shank prevents slipping High wear resistance and hot hardness Faster, cleaner drilling through FLOWSTEP® design The primary benefit of the tool lies in its FLOWSTEP® technology, which provides a soft, seamless transition between successive diameters during the drilling process. This design produces a cleaner hole with reduced burr formation and enables an extremely fast pilot action, lowering the required feed force and conserving motor torque in portable drills. Built from HSS and finished with RUNaTEC coating, the bit combines thermal stability and abrasion resistance to maintain cutting performance over longer production runs. The result is an efficient workflow and a consistent hole quality that supports repeatable processes. Secure clamping and precise centring for handheld use A notable practical advantage is the 3‑flat shank, which prevents the bit from rotating in the chuck and improves torque transmission in hand‑held applications. The FLOWSTEP® tip and cross‑ground point geometry permit point‑exact centring without prior centre‑punching, even on round surfaces such as pipes, reducing setup time and simplifying single‑operator tasks. With two cutting edges and a spiral flute, the tool offers a calm, low‑vibration drilling action that protects both the workpiece and the operator’s tool, making it particularly suitable for workshop environments where handheld portability and accuracy matter. Durability and predictable productivity for production tasks The combination of HSS material, RUNaTEC coating and spiral fluting achieves a higher thermal endurance and substantially improved wear resistance, which can translate into up to twice the number of holes before tool replacement. This durability reduces downtime and tool‑change frequency, supporting a reliable production rhythm. The stepped geometry with a 90° step angle and a 118° point angle gives consistent chipping and easy chip evacuation. For maintenance‑oriented operations and smaller series manufacturing, the bit offers an attractive balance between longevity and consistent hole quality. Contact Metav Werkzeuge for tailored advice on the RUKO ULTIMATECUT step drill, available from our Emmerich warehouse; email info@metav-werkzeuge.com or call +49 2822 7131930 for specifications and ordering guidance Technical data Article number: 4000865852NW Product label: Stufenbohrer ULTIMATECUT Bohrber.8-30mm HSS RUnaTEC Spiralnut Z.2 Stufen 12 RUKO Manufacturer: Ruko GmbH Packing unit: 1 UID: 4000865852NW Data Diameter range: 8–30 mm Steps: 12 Cutting edges: 2 Point angle: 118° Step angle: 90° Special features HSS material RUnaTEC coating Spiral flute Cross‑ground tip FLOWSTEP® tip on all steps 3‑flat shank Right‑hand cutting Precise centring without centre‑punching Suitable for handheld power tools Increased wear resistance and hot hardness Up to 2× longer tool life FAQ What diameter range does this step drill cover? The RUKO ULTIMATECUT step drill covers a diameter range of 8–30 mm, allowing multiple hole sizes with a single tool. Is the bit suitable for use in handheld drills? Yes — the 3‑flat shank and right‑hand cutting geometry make the ULTIMATECUT well suited to handheld power tools. How does FLOWSTEP® improve drilling results? FLOWSTEP® provides a soft, continuous transition between steps, producing smoother holes, reduced burrs and a calmer drilling action with lower feed force. How many cutting edges does the tool have and what is the point angle? The tool has 2 cutting edges and a 118° point angle, which support precise centring and reliable chip formation. Will the RUNaTEC coating extend tool life? The RUNaTEC coating increases wear resistance and thermal hardness, contributing to extended life and up to twice the number of holes in typical use. Manufacturer: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen