Pneumatic Impact Wrench, General Duty, Pistol Style, 2 In Extended Anvil, Square Drive Size 1/2 In, Torque Range 30 to 320 Ft to Lb, Max Torque 550 Ft-Lb, Average CFM @ 15 Second Run Time 4.8, CFM @ Full Load 19, Max Bolt Capacity 9/16 In, Free Speed 8000 RPM, Ring Retainer Type, Required Pressure 90 PSI, Air Inlet 1/4 In, Min Hose 3/8 In, Overall Length 7 1/3 In, Aluminum Handle Material, Steel Housing, Weight 6.1 Lbs