M7 Impact Wrench

Impact wrenches do a great job of tightening and loosening bolts, lug nuts and rusted fasteners. They provide a very high rotational torque that regular drills are simply not capable of and deliver high torque output with minimal exertion by the user. An impact wrench is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft. It was invented by Robert H. Pott of Evansville, Indiana.