Irwin 10234CB Unibit Cobalt Alloy Steel #4 12 Step Drill Bit 3/16-in. – 7/8-in.

Irwin Unibit Cobalt Alloy Steel is made of high speed steel, this step drill bit will last longer in the toughest of materials. Irwin Industrial Tools 10234CB 4 12 Hole Sizes (3/16-Inch-7/8-Inch), 1/16-Inch Increments

• Cobalt Alloy Steel for extended cutting edge life makes it ideal for drilling stainless steel
• Drills 12 different hole sizes, from 3/16″ to 7/8″ by 16ths
• SpeedPoint tip prevents “walking,” gets fast starts, and eliminates the need for pilot/starting hole
• Single-flute cutting edge drills true round holes with smooth, clean finish