Impact Wrench Power Source Air Powered Air Consumption 53 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 Industrial Duty Breakaway Torque 1 100 ft-lb Fastening Torque 900 ft-lb Free Speed 4 000 RPM Impact Rated Yes Impact Sound Level 103 dB Impacts per Minute 1 100 Number of Speed Settings 3 Power to Weight Ratio 92.4 ft-lb/lb Max Bolt Capacity 1 1/2 in