Greenlee 34410 STEP BIT, Hole sizes Through 1/2"

Greenlee 34410 Specifications: Hole Size: 1/2" Capacity: Cut up through 3/8" (9.5 mm) mild steel, copper, brass, aluminum, wood, plastic and laminates. Overall Length: 1-7/8" Minimum Chuck Size: 3/8" Maximum Material Thickness: 10 gauge Bit Extension: 901 (not included) Greenlee 34410 Includes: (1) Kwik Stepper Step Bit Greenlee 34410 Features: 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. Single-hole bits are designed to drill one indicated hole size through a series of steps from bit tip to full size.