Irwin UNIBIT 10233 Step Drill Bit, 1/4 to 3/4 in Dia, 2-1/2 in OAL, 1-Flute, 3/8 in Dia Shank, Hex Shank ELECTRIC SHAVERS Handsome in appearance

Handsome in appearance

and also tests detector functions

Oval ring design

Allows for longer exhaust using Supurr-flex duct (not included)

Irwin UNIBIT 10233 Step Drill Bit, 1/4 to 3/4 in Dia, 2-1/2 in OAL, 1-Flute, 3/8 in Dia Shank, Hex Shank ELECTRIC SHAVERS Handsome in appearanceThe Irwin UNIBIT HSS fractional self starting step drill #5, 1 4 to 1 3 8 in, is ideal for drilling clean, smooth holes in mild steel, copper, bass, aluminum, plexiglass, wood and laminate. Crafted of HSS, it has a SpeedPoint tip that guarantees fast starts and a single flute cutting edge for drilling true, round holes with a precise step control for multiple sizes. Hole sizes are permanently laser etched on the inside of the flute and will not wear