IRWIN 10312ZR - #12 3/8 in. Unibit Step Drill M12 dry coring and chipping in

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

867/1 Z TORX Bit: T40 x 25mm

Cable-gripping shear-type jaws provide exceptional cutting capability

This case has been refined over the past 15 years

Metal reinforced top handle

IRWIN 10312ZR - #12 3/8 in. Unibit Step Drill M12 dry coring and chipping inThe 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