This unit has 345 ft-lbs of deliverable torque in forward and reverse - Plenty of power to tighten or remove bolts and nuts that are to tight to remove by hand or with cordless impact drivers. It has a 1/2" detent pin anvil and a forward/reverse rocking switch. Soft grip handle designed for superior ergonomics. Built with ball bearing construction for increased durability. Sometimes referred to as a socket gun, socket wrench or air wrench.