The Milwaukee 49224800 Shockwave Impact Duty Hole Saws are ideal to use with impact drivers to make holes. The hole saws deliver a burr-free cut and they are up to 40% faster than standard bi-metal hole saws. They are designed with a robust 1/4" quick change hex shank and an ejection spring which automatically ejects the material. Users need not worry about over-drilling as the stop shoulder design helps to prevent this from happening and avoids you damaging inner components of electric and junction boxes.
Features and Benefits: 8 TPI = smooth burr free holes. Thin wall - 0.6 mm thick = less resistance, up to 40% faster. Shallow cup optimised for thin metal. 1/4 Hex shank = impact driver compatible. Stop shoulder prevents over drilling. 8% Cobalt Bi-Metal for best durability and lifetime. Ejection spring auto ejects slugs. Optimised for use with cordless tools.