1" HEAVY DURY AIR IMPACT WRENCH(PIN CLUTCH) SQUARE DRIVE: 1" CAPACITY BOLT SIZE: 1-3/4"(45MM) FREE SPEED: 3,800 RPM MAX. TORQUE:1,200 FT-LB(1627 N-m) SOUND LEVEL: 96 dB(A) VIBRATION: 8.5M/S2 AIR PRESSURE: 90 PSI AIR INLET: 1/4" NPT AVG. AIR CONS.: 12 CFM