The OEM Automotive Tools 1/2" Drive Air Impact Wrench, No. 24418, is designed with a compact body and offers both 900 ft/lbs of torque and a free speed of 10,000 rpm. It also features It also features an O-ring groove anvil, jumbo hammer clutch impact assembly and easy-to-control trigger assembly. This 2.98-lb impact wrench includes seven 1/2" short impact sockets, sizes 13mm – 19mm, in an EVA tray that fits in most toolboxes. The cfm is 4.0 at 90 psi. The recommended hose size is 3/8”.