Impact Wrench Power Source Air Powered Air Consumption 10 cfm Air Inlet 1/4 in NPT Air Pressure 92 psi Max Air Pressure 90 psi Min Air Pressure 90 psi Min Hose Size 3/8 in Exhaust Location Bottom Duty Rating General Duty Breakaway Torque 75 ft-lb Fastening Torque 50 ft-lb Free Speed 11 000 RPM Impact Rated Yes Impact Sound Level 98 dB Impacts per Minute 1 620 Number of Speed Settings 3 Power to Weight Ratio 28.8 ft-lb/lb Max Bolt Capacity 1/2 in Drive Size 3/8 in Square