Irwin Unibit #11 HSS 7/8-Inch Step-Drill Bit, 3/8-Inch Shank (10311) USA Made Metric Fit for Children: No

Fit for Children: No

manufactured of high quality alloy materials

For Use With K1M Chuck Key

The unit has old packing grease on the machined surfaces that is easily cleaned off

Middle handle exhaust with 360° adjustable deflector directs air away from the operator

Irwin Unibit #11 HSS 7/8-Inch Step-Drill Bit, 3/8-Inch Shank (10311) USA Made Metric Fit for Children: NoIrwin Unibit #11 HSS 7 8 Inch Step Drill Bit, 3 8 Inch Shank (10311) USA Made The shanks on these step drill bits have three flats that help prevent the bits from slipping in the drill chuck during drilling. These cone shaped bits have steps of increasing diameter marked along their cutting head. As each bit is pushed into a piece of sheet metal or other thin material, each step on the bit widens the hole. The bits also have a self starting split