6-20mm Step Drill HSS RUnaTEC Coated Spiral Flute 2-Flute FLOWSTEP® 118° Tip, 90° Steps - Ruko GmbH

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