Greenlee 03607 Kwik Stepper Step Bit Kit, 2-Piece
Capacity : cut up through 3/8 in (9.500 mm) mild steel, copper, brass,aluminum, wood, plastic and laminates, Hole size : from 1/8 in (3.200 mm) through 1-3/8 in (3.200 - 34.900 mm)
From the Manufacturer
Greenlee's unique split tip design penetrates through steel faster. Resists walking or skidding, even on round surfaces. Balanced, double-flute construction requires less pressure, does the work for you. Designed and manufactured in USA.