Drill Bits

UNIBIT® 1/8 - 1/2" #1 High Speed Steel Step Drill Bit 10231

Irwin 10231 Unibit® #1 13-step 1/4-inch step drill bit, 1/32-inch steps (1/8 - 1/2") save time by eliminating the need to change drills when drilling round holes in thin materials.Each smaller size...

4 Pc. High Speed Steel Step Drill Bit Set 10225

The Irwin Unibit® high-speed steel step drill set features single-flute cutting edges for greater control and more precise drilling.Three-flatted shanks prevent the bits from slipping in the drill...

UNIBIT® 13/16 - 1-3/8" #21 High Speed Steel Step Drill Bit 10221

Designed with a single-flute cutting edge for great control, the Unibit® #21 13/16" - 1-3/8"Step-drill bit makes true round holes every time.It can power through a variety of surfaces, including:...

UNIBIT® 9/16 - 1" #20 Cobalt Alloy Steel Step Drill Bit 10220CB

Step drill bit, material cobalt, steam oxide finish, number of hole sizes 8, shank size 7/16" step thickness 1/8" size range 9/16" - 1". Sizes included 9/16", 5/8", 11/16", 3/4", 13/16", 7/8",...

UNIBIT® 9/16 - 1" #20 High Speed Steel Step Drill Bit 10220

Get it all done with one when you choose Unibit® stairstep bits.Single-flute cutting edge provides precise depth control though all size steps.Shanks flat side surface ensures slip-free chuck...