This Ingersoll Rand composite air impact wrench uses Quiet Technology to achieve low noise level, yet delivers impressive torque to challenge the toughest jobs. Max. Torque (ft.-lbs.): 600, Drive (in.): 1/2, Variable Speed: Yes, Noise Level (dB): 82, Speed - No Load (RPM): 9,500, Impacts Per Minute (IPM): 1,250, Hammer Mechanism: Twin, Reversible: Yes, Average Air Consumption (CFM): 4.8, Max. Reverse Torque (ft.-lbs.): 600, Forward Torque (ft.-lbs.): 450