Beefy Pro Grade Step Drill Bit For Metal With M35 Cobalt Coating And Spiral Flute Unibit One Quarter Inch To Three Quarter Inch AlTiN Wear Resistant One Quarter Inch Hex Shank Cuts Stainless Steel Aluminum And Plastic EZARC

Pro Grade M35 Cobalt Step Drill Bit for Metal 1/4-3/4 in
✔️ Nine-step M35 HSS with AlTiN coating, 1/4 in hex shank (single)

This heavy-duty step drill bit is built for metalworking, delivering clean, stepped holes through steel, aluminum, and tough plastics. Ideal for sheet metal fabrication, DIY projects, and maintenance work where you need multiple hole sizes without swapping bits.

✅ M35 cobalt HSS with through-hardening for standout toughness
✅ AlTiN coating rated around 89HRC for heat, wear, and corrosion resistance
✅ C-Profile triple-flute design boosts stability and cutting speed
✅ Nine sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
✅ 1/4" hex shank for quick engagement in standard drill chucks
✅ Metal sheet thickness up to 1/8" (3 mm); stainless up to 1 mm

💡 What is a high-performance step drill bit with M35 cobalt and AlTiN coating used for in metalworking? This handy tool makes it easy to drill clean, stepped holes in tougher materials without swapping bits.
- handy for drilling stainless steel, aluminum, and plastics
- reduces tool changes by covering multiple hole sizes in one bit
- offers strong wear resistance and heat tolerance thanks to AlTiN coating