Impact Wrench Power Source Air Powered Air Consumption 11 cfm Air Inlet 1/4 in NPT Air Pressure 90 psi Max Air Pressure 100 psi Min Air Pressure 90 psi Min Hose Size 3/8 in Exhaust Location Bottom Duty Rating General Duty Breakaway Torque 180 ft-lb Fastening Torque 150 ft-lb Free Speed 13 000 RPM Impact Rated Yes Impact Sound Level 92 dB Impacts per Minute 1 500 Number of Speed Settings Continuous Power to Weight Ratio 51.9 ft-lb/lb Max Bolt Capacity 3/8 in