Irwin 10502ZR Unibit Step Drill Set 3-Piece HSS Unibit 1 2 3

Irwin 15502 3-piece Unibit titanium-coated step drill set including 1T, 2T, and 3T sizes. Titanium coating extends bit life over uncoated HSS step drills. Bundled set covers common step drill sizes...

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-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...

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-5 step drill covering 1/4 inch through 1-3/8 inch in stepped sizes. Larger diameter range than Unibit-1 through 4 supports larger hole drilling in sheet metal and thin-wall material...