Air Impact Wrench, Power Source Air Powered, Air Consumption 14 cfm, Air Inlet 3/8 NPT Female, Air Pressure 90 psi, Max. Air Pressure 90 psi, Min. Hose Size 1/2 in, Duty Rating General Duty, Breakaway Torque 1,450 ft-lb, Fastening Torque 1,300 ft-lb, Free Speed 5,500 RPM, Impact Rated Yes, Explosive Environment Rated No, Impact Sound Level 105.3 dBA, Impacts per Minute 1,075, Number of Speed Settings 4, Power to Weight Ratio 256.4 ft-lb/lb, Max. Bolt Capacity 1 in, Drive Size 3/4 in Square