Irwin Unibit Step Drill

Use the Irwin step drill bit to create holes in thin metal and laminate workpieces. Made of a high-speed steel metal that tolerates a large workload. The metal step drill bit has a single-flute feature for greater control of the tool. It provides fast penetration with the speed point tip without skipping. Size: M2: 4mm – 12mm M3: 6mm – 18mm M4: 4mm – 22mm M5: 5mm – 35mm