Impact Wrench Power Source Air Powered Air Consumption 24 cfm Air Inlet 3/8 in NPT Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 90 psi Min Hose Size 1/2 in Exhaust Location Bottom Duty Rating General Duty Breakaway Torque 1 000 ft-lb Fastening Torque 700 ft-lb Free Speed 4 200 RPM Impact Rated Yes Impact Sound Level 107 dB Impacts per Minute 900 Number of Speed Settings 4 Power to Weight Ratio 95.2 ft-lb/lb Max Bolt Capacity 1 1/8 in