Home Industrial & Safety Metalworking Holemaking Drill Bits Multipurpose Drill Bits Step Drill Bits Greenlee® Kwik Stepper® 34401 Multi-Hole Step Bit, 1/8 in Diameter Minimum Hole, 1/2 in Diameter Maximum Hole, 13 Steps, Steel, 13 Hole, 3/8 in Shank