Impact Wrench Power Source Air Powered Air Consumption 80 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 Industrial Duty Breakaway Torque 5 000 ft-lb Fastening Torque 3 900 ft-lb Free Speed 2 750 RPM Impact Rated Yes Impact Sound Level 101 dB Impacts per Minute 700 Number of Speed Settings Continuous Power to Weight Ratio 144.5 ft-lb/lb Max Bolt Capacity 1 1/2 in