Heavy Duty Cobalt Step Drill Bit Set For Metal 3/16 To 7/8 Inch, 12 Steps, Pro Grade For Stainless Steel Aluminum Copper Iron, Built To Last With Fast Cutting For Quick Smooth Holes

Cobalt Step Drill Bit for Metal, 3/16-7/8 in, 12 Steps, 1pc
✔️ 12-step cobalt step drill, 3/16-7/8 in range, 1/4 in shank

This heavy-duty cobalt step drill bit is built to tackle tough metals, including stainless steel, aluminum, copper, and more. It’s a go-to tool for metal fabrication, automotive repairs, and industrial maintenance where reliable hole sizes are needed.

✅ 3/16-7/8 in hole sizes (12 steps)
✅ M35 cobalt steel (1.3243) with TiAlN coating for long life
✅ 1/4 in shank
✅ 2-flute design for fast chip clearance
✅ Suitable for stainless steel, metal sheets, aluminum, copper and more

💡 What is a cobalt step drill bit used for in metalworking and why choose cobalt-coated tools?

A handy option for durable metal drilling in fabrication and maintenance tasks.

• Cobalt bits excel at drilling stainless steel and hard alloys with less breakage
• TiAlN coating reduces friction and extends tool life in tough metals
• Ideal for creating multiple hole diameters with a single bit
• Best used with a drill press or mag drill and proper coolant