Holesaw set offers a professional hole-making solution for use with impact drivers. Designed with a robust 1/4" quick-change hex shank, 0.6mm thin wall and 8 Tpi design, with stop-shoulder to prevent over-drilling and shallow cup optimised for drilling thin metal. Delivers a burr-free cut up to 40% faster than standard bi-metal hole saws. Includes ejection spring to automatically eject the material, removing the frustration of manual slug removal. Cuts Metal Steel Continuous Angled Slotted Barrel Provides Leverage for Easy Plug Ejection and Removal 22mm - 35mm Dia. Holesaws Can be Used with Rotary & Impact Modes Cuts Metal Steel Continuous Angled Slotted Barrel Provides Leverage for Easy Plug Ejection and Removal 22mm - 35mm Dia. Holesaws Can be Used with Rotary & Impact Modes