Irwin 10220 Unibit-20 HSS Step Drill 9/16 In to 1 In 8 Steps

Irwin Unibit-20 cobalt step drill covering 9/16 inch through 1 inch in 8 step sizes. Cobalt construction extends bit life on stainless and hardened steel vs standard HSS step drills. Used by...

Irwin Unibit-1 HSS step drill covering 1/8 inch through 1/2 inch in 13 step sizes with self-starting tip. Self-starting tip eliminates pilot drilling on sheet metal and thin-wall material. Used by...

Irwin Unibit-4 HSS step drill covering 3/16 inch through 7/8 inch in 12 step sizes with 1/16 inch steps and self-starting tip. Self-starting tip eliminates pilot drilling on sheet metal and thin-wall...

Irwin Unibit-10 HSS step drill at 1/2 inch in single step size with self-starting tip. Single step bit produces 1/2 inch holes in sheet metal and thin-wall material. Self-starting tip eliminates...

Irwin Unibit-3 HSS step drill covering 1/4 inch through 3/4 inch in 9 step sizes with self-starting tip. Self-starting tip eliminates pilot drilling on sheet metal and thin-wall material. Used by...