Impact Wrench Power Source Air Powered Air Consumption 30 cfm Air Inlet 1/4 in NPT Air Pressure 90 psi Max Air Pressure 90 psi Min Air Pressure 90 psi Min Hose Size 3/8 in Exhaust Location Bottom Duty Rating Industrial Duty Breakaway Torque 800 ft-lb Fastening Torque 560 ft-lb Free Speed 8 400 RPM Impact Rated Yes Explosive Environment Rated ATEX Certified Explosive Environment Rating ATEX Zone 2 Impact Sound Level 104 dB Impacts per Minute 1 200 Number of Speed Settings 3