Four Spiral Flute Cobalt Step Drill Bit Pro 1/4 To 3/4 Inch, Hex Shank 1/4, Impact Ready Unibit For Metal, Stainless Steel, Aluminum And Plastic, TiAlN Coated M35 Cobalt HSS Drilling Bit

Cobalt Step Drill Bit Pro: 1/4 to 3/4 Inch, 9 Sizes (1 pc)
✔️ 4-flute spiral, TiAlN-coated M35 cobalt HSS, 9 sizes, 1 pc

This cobalt steel step drill bit is built for fast, clean hole expansion in metalworking, DIY projects, and professional fabrication. It performs well in workshop and garage settings for drilling thin stainless steel, aluminum, copper, plastic, and wood.

✅ 9 step sizes: 1/4" (6.35 mm) to 3/4" (19.05 mm)
✅ Hex shank 1/4" (6.35 mm) fits standard drives and impact tools
✅ Four spiral flutes for faster, smoother cutting
✅ TiAlN coating adds hardness and lowers wear for long life
✅ M35 cobalt HSS construction for tough metal work
✅ Suitable for stainless steel, aluminum, copper, plastic, and wood
✅ Color: Purple-Black; includes 1/8" (3.0 mm) thickness capability per spec
✅ warranty: 100% refund or replacement if not satisfied

💡 What is a handy step drill bit used for in metalworking and DIY projects?

It's handy for quickly creating clean, stepped holes in thin metal, plastic, and wood, reducing the need to swap bits during a project.

- 9-step sizes cover 1/4" to 3/4" (6.35 mm to 19.05 mm) - TiAlN-coated M35 cobalt HSS delivers wear resistance and fast cutting - Hex shank 1/4" (6.35 mm) ensures a secure fit with impact drivers - Ideal for stainless steel, aluminum, copper, plastic, and wood sheets✝️