Greenlee Step Bit Set #1 4 9 Sizes: 1/2" 7/8" 1-1/8"

New patented split-tip design for fast, accurate material penetration. Patented split-step design optimizes chip load for fast, smooth cutting, and more holes per charge. Progressive cutting edges provide balanced aggression to maximize torque efficiency and minimize stalling.​ Improved double flute design for superior chip evacuation, cutting speeds and tool life.​ Three-flat shank for all 1/2” drill chucks.​ Laser markings for quick, easy product and size identification.