150mm Step Drill Set HSS Spiral Flute RUnaTEC Coating Turbo Point 4-Flute 10mm Step Length - Ruko GmbH

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