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 and also tests detector functions

and also tests detector functions

Oval ring design

prevents topcoats from soaking into the primed surface

Copper Fit's highest level quality sleeve

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 and also tests detector functionsThe 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