Sioux Impact Wrench, 1100 ft.-lb. Max. Torque, Max. Bolt Capacity: 3/4"", Torque Range: 825 ft.-lb., Anvil: Steel, Air Inlet: 3/8"" NPT, Min. Hose Size: 1/2"", Square Drive Size: 1"", Average CFM @ 15 Second Run Time: 15, Blows per Minute: 1000, 5700 rpm Free Speed, 7.600"" Overall Length, Steel Housing, Pistol Grip Handle Type, 90psi, Retainer Type: Through Hole, CE