IRWIN 10312ZR - #12 3/8 in. Unibit Step Drill M12 This case has been refined

This case has been refined over the past 15 years

15-tine rake

Metal reinforced top handle

dry coring and chipping in any mid to upper wall and ceiling application

Cable-gripping shear-type jaws provide exceptional cutting capability

IRWIN 10312ZR - #12 3/8 in. Unibit Step Drill M12 This case has been refinedThe IRWIN 10312ZR Step Drill Bit is ideal for drilling holes in thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. Featuring a patented single flute cutting edge, it ensures perfectly round holes and provides greater control through the steps. Its 3 nut shank prevents slippage in the drill chuck, while the SpeedPoint tip improves penetration and prevents walking. Made of high speed steel, this bit is strong and