Impact Wrench Power Source Air Powered Air Consumption 52 cfm Air Inlet 1/2 in NPT Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 70 psi Min Hose Size 1/2 in Exhaust Location Rear Duty Rating General Duty Breakaway Torque 2 000 ft-lb Fastening Torque 2 000 ft-lb Free Speed 4 300 RPM Impact Rated No Impact Sound Level 90 dB Impacts per Minute 540 Number of Speed Settings 3 Max Bolt Capacity 1 1/2 in Drive Size 1 in Square Drive Type Standard