Cobalt Step Drill Bit Set 1/4 To 3/4 Inch With 1/4 Inch Hex Shank, 9 Sizes, Unibit, Impact Resistant For Stainless Steel, Wood, Aluminum, And Plastic, Spiral Flute Design Built Tough

Step Drill Bit Set 1/4 to 3/4 in, 9-piece unibit set
✔️ 9 sizes from 1/4 in to 3/4 in, M35 cobalt HSS with TiAlN coating

This cobalt-infused step drill bit set is built to punch clean, stepped holes across stainless steel, aluminum, wood, and plastic. It's a go-to choice for shops and DIYers tackling metal fabrication, cabinetry, and project builds.

✅ 9 sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
✅ M35 cobalt HSS for wear and heat resistance
✅ TiAlN coating boosts hardness and lifetime
✅ Four spiral grooves for fast cutting and easy chip evacuation
✅ Hex shank fits standard drills for solid grip

💡 What is a step drill bit used for in metalworking and plastics?

This handy tool makes stepped holes in a wide range of materials, simplifying drilling projects.

• Handy for drilling multiple hole sizes in one pass
• Delivers cleaner finishes on stainless steel and aluminum
• TiAlN coating helps resist wear under heat
• Hex shank minimizes bit slippage and improves control