Impact Wrench Power Source Air Powered Air Consumption 68 cfm Air Inlet 1/2 in NPT Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 90 psi Min Hose Size 1 in Exhaust Location Bottom Duty Rating Industrial Duty Breakaway Torque 2 800 ft-lb Fastening Torque 1 800 ft-lb Free Speed 3 500 RPM Impact Rated Yes Impact Sound Level 110 dB Impacts per Minute 1 020 Number of Speed Settings 3 Power to Weight Ratio 122.3 ft-lb/lb Max Bolt Capacity 1 3/8 in