Lion 1/2 Inch 11000 RPM Air Impact Wrench, 550 Nm Max. Torque (LI-2805)

An impact wrench, also referred to as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, or windy gun, is a type of socket wrench power tool that uses a rotating mass to store energy before abruptly releasing it into the output shaft to produce high torque output with little user effort.