Impact Wrench Power Source Air Powered Air Consumption 57 cfm Air Inlet 1/2 in NPT Air Pressure 90 psi Max Air Pressure 100 psi Min Air Pressure 90 psi Min Hose Size 3/4 in Exhaust Location Bottom Duty Rating General Duty Breakaway Torque 2 000 ft-lb Fastening Torque 1 900 ft-lb Free Speed 4 500 RPM Impact Rated Yes Impact Sound Level 102 dB Impacts per Minute 770 Number of Speed Settings Continuous Power to Weight Ratio 111.2 ft-lb/lb Max Bolt Capacity 1 in