Impact Wrench Power Source Air Powered Air Consumption 40 cfm Air Inlet 1/2 in NPT Female Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 50 psi Min Hose Size 1/2 in Exhaust Location Bottom Duty Rating General Duty Breakaway Torque 1 600 ft-lb Fastening Torque 1 600 ft-lb Free Speed 6 000 RPM Impact Rated Yes Impact Sound Level 100 dB Impacts per Minute 600 Number of Speed Settings 3 Max Bolt Capacity 1 3/4 in Drive Size 1 in Square Drive Type Standard