Step Drills

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 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...