Impact wrenches are widely used in many industries, such as automotive repair, heavy equipment maintenance, product assembly, major construction projects, and any other instance where a high torque output is needed. Impact wrenches are also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, or a windy gun. It 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. Air ratchets are useful for loosening/tightening multitudes of low-to-medium torque bolts. We can't use an impact wrench here because it can easily over-torque the bolts and cause damage to the threads or snap off the bolt heads or studs.