Greenlee's GSB Series Step Bits are an entirely new line of patented step bits for effortless cutting and unmatched durability. Still proudly designed and manufactured in the USA, Greenlee’s GSB Series Step Bits offer the fastest, smoothest cut and longest tool life. A durable split-point tip allows for fast, accurate material penetration. The patented progressive split-step design maximizes torque efficiency to minimize stalling and optimizes chip load for fast, smooth cutting, and more holes per charge. The industry-standard Greenlee double flute design has been improved to deliver superior chip evacuation, cutting speeds and tool life.