Irwin (928) 16104 IRWIN Unibit Titanium Metric Self-Starting Step Drill Bit, No.4MT (16104)

16104 Unibit® Titanium Nitride (TiN) Coated Metric Step Drill. No.4MT, 4 mm - 22 mm - Carded. Standard Features: Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. Single-flute cutting edge for greater control through steps. 3 flatted shank prevents slipping in drill chuck. SpeedPoint® tip for fast starts. Description: No.4MT 4 mm - 22 mm (2 mm Increments). No. of Hole Sizes: 10 steps. Maximum Material Thickness: 5 mm.