Air Impact Wrench Industrial Duty Standard Anvil Square Drive Size 1/2 In. Max Bolt Capacity 9/16 In. Torque Range 25 to 251 ft.-lb. Max Torque 332 ft.-lb. Average CFM @ 15 Second Run Time 4.0 CFM @ Full Load 17.0 Free Speed 15 000 rpm Pin Retainer Type Pistol Grip Style Required Pressure 90 psi Air Inlet 1/4 in NPT Min Hose Size 3/8 In. Overall Length 6 In. Composite Handle Material Handle Type Pistol Grip Titanium Housing Material Tool Weight 2.51 lb.