3/4" ULTRA DUTY AIR IMPACT WRENCH (TWIN HAMMER) BOLT CAP.:13/16"(20MM);AIR CONS.:7.7CFM(220 l/min) AIR PRESSURE: 90PSI(6.3kg/cm2) MAX TORQUE:1100 ft-lb(1490N-M) FREE SPEED: 7,500 RPM LENGTH:178MM;WEIGHT:2.68KG