IRWIN USA Made HSS Unibit # 1M Metric Step Drill 4 - 12mm 1/4" Shank HSS Lathe Tool Bit Cutter The vinyl helps to protect

The vinyl helps to protect the case from humidity

2 positions in forward and a full 200 ft/lbs of nut wrenching torque in reverse

High Speed Steel and hardened throughout

Part number 15-180

IRWIN USA Made HSS Unibit # 1M Metric Step Drill 4 - 12mm 1/4" Shank HSS Lathe Tool Bit Cutter The vinyl helps to protectIRWIN USA Made Unibit # 1M Metric Step Drill 4 12mm 1 4" Shank The IRWIN Unibit #1M High Speed Steel Metric Hole Enlarging Step Drill Bit is ideal for drilling holes into thin materials, such as stainless steel, copper, brass, aluminum, plastic and laminates. Each drill bit uses a single flute cutting edge that gives a true, round hole and provides greater control through steps. The hex shank helps prevent slipping in the drill chuck. The #1M drill