Impact Wrench Power Source Air Powered Air Consumption 17 cfm Air Inlet 1/4 in NPT Female Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 50 psi Min Hose Size 3/8 in Exhaust Location Bottom Duty Rating General Duty Breakaway Torque 600 ft-lb Fastening Torque 600 ft-lb Free Speed 9 000 RPM Impact Rated Yes Impact Sound Level 96 dB Impacts per Minute 1 200 Number of Speed Settings 5 Max Bolt Capacity 5/8 in Drive Size 1/2 in Square Drive Type Standard