1" HEAVY DURY AIR IMPACT WRENCH(ROCKING DOG) SQUARE DRIVE: 1" CAPACITY BOLT SIZE: 1-1/2"(38MM) FREE SPEED: 3,500 RPM MAX. TORQUE:1,400 FT-LB(1899 N-m) SOUND LEVEL: 95 dB(A) VIBRATION: 6.9M/S2 AIR PRESSURE: 90 PSI AIR INLET: 1/2" NPT AVG. AIR CONS.: 14 CFM