Irwin 10233 Unibit-3 HSS Self-Starting Step Drill 1/4 In to 3/4 In 9 Steps

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-2 HSS step drill covering 3/16 inch through 1/2 inch in 6 step sizes with self-starting tip. Self-starting tip eliminates pilot drilling on sheet metal and thin-wall material. Used by...

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 10502ZR 3-piece Unibit step drill set including Unibit-1, Unibit-2, and Unibit-3 in HSS construction. Bundled set covers common step drill sizes for electrician, HVAC technician, and...

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...