RUKO STB-HSS-TiN Step Drill Bit 1/4 inch-3/4 inch (6.35-19.05 mm), TiN Coated HSS, 9 Steps, 3-Flat Shank

This RUKO step drill bit stands out with its titanium nitride coating that reduces friction and extends tool life when drilling thin sheet metal, non-ferrous metals, plastics, and thin wood. The 9-step profile covers diameters from 1/4" to 3/4" (6.35 mm to 19.05 mm) in 1/16" increments, eliminating the need for multiple drill bits or pilot holes.

Highlights

• TiN-coated high-speed steel for durability and heat resistance
• Self-centering tip starts holes accurately without a center punch
• Straight flute design clears chips efficiently in thin materials
• Laser-etched diameter markings for quick step identification
• 3-flat shank prevents slipping in the drill chuck

In daily use

The step drill produces clean, burr-free holes and can deburr existing holes in one operation. It fits corded and cordless drills with a 10 mm chuck, and the 75 mm overall length provides good reach in tight spaces.

Full specifications

• Drill bit type: Step drill bit
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Drilling range: 1/4" - 3/4" (6.35 mm - 19.05 mm)
• Number of steps: 9
• Step increment: 1/16" (1.59 mm)
• Shank type: 3-flat shank
• Shank diameter: 10 mm (3/8")
• Total length: 75 mm
• Flute type: Straight flute
• Self-centering tip: Yes
• Deburring capability: Yes
• Laser-etched markings: Yes
• Colour: Gold

Final note

For precise, burr-free holes in thin materials, this RUKO step drill bit delivers consistent performance and long service life.