RUKO STB-HSS-SP-Gr.4-6-26.75mm Step Drill Bit, HSS, 4-26.75mm, 12 Steps, Split Point, 10mm Shank

This RUKO step drill bit stands out with its 12-step design, covering diameters from 4 mm to 26.75 mm in 2 mm increments, eliminating the need for multiple drill bits when working with thin materials. The split point tip ensures precise starting without wandering, while the cylindrical 10 mm shank fits standard drill chucks.

Highlights

• High-speed steel (HSS) construction for durability and heat resistance.
• Split point geometry for accurate centering and reduced walking.
• Spiral flute design for efficient chip evacuation.
• Suitable for steel, non-ferrous metals, plastics, and thin sheets up to 4 mm thick.
• Right-hand cutting direction with a 130° point angle.

In daily use

Ideal for electricians, plumbers, and sheet metal workers, this step drill bit quickly enlarges existing holes or creates new ones in thin materials. The bright finish reduces friction and improves visibility of the cutting edge. The 100 mm total length provides good reach in confined spaces.

Full specifications

• Material: High-Speed Steel (HSS)
• Point Type: Split Point (SP)
• Shank Type: Cylindrical
• Shank Diameter: 10 mm
• Drill Diameter Range: 4 mm - 26.75 mm
• Number of Steps: 12 steps
• Step Increments: 2 mm
• Total Length: 100 mm
• Max Material Thickness: 4 mm
• Flute Type: Spiral Flute
• Application Materials: Steel, Non-ferrous metals, Plastics, Thin sheets
• Surface Treatment: Bright (Uncoated)
• Cutting Direction: Right-hand cut
• Standard: DIN 1412 C
• Point Angle: 130°
• Tool Compatibility: Drill Chuck
• Product Type: Step Drill Bit
• Series/Group: Group 4-6

Final note

With its wide range and precise stepping, this RUKO step drill bit is a reliable choice for professionals who demand clean, accurate holes in thin materials.