Impact Wrench Power Source Air Powered Air Consumption 14 cfm Air Inlet 1/4 in NPT Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 90 psi Min Hose Size 3/8 in Exhaust Location Bottom Duty Rating Industrial Duty Breakaway Torque 180 ft-lb Fastening Torque 150 ft-lb Free Speed 6 800 RPM Impact Rated Yes Impact Sound Level 101 dB Impacts per Minute 1 800 Number of Speed Settings 4 Power to Weight Ratio 51.4 ft-lb/lb Max Bolt Capacity 3/8 in