An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) 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. Ultimamac has wide variety of Impact Wrench Spares parts. You can get Original Impact Wrench Spares under one roof from Authorized and genuine dealer at the lowest price.