Impact Wrench Power Source Air Powered Air Consumption 8 cfm Air Inlet 1/4 in NPT Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 70 psi Min Hose Size 3/8 in Exhaust Location Rear Duty Rating General Duty Breakaway Torque 80 ft-lb Fastening Torque 80 ft-lb Free Speed 12 000 RPM Impact Rated No Impact Sound Level 90 dB Impacts per Minute 900 Number of Speed Settings 3 Max Bolt Capacity 3/8 in Drive Size 3/8 in Square Drive Type Standard