This Ingersoll Rand air impact wrench delivers smooth power unaffected by pressure changes. Hammer Mechanism Single, Impacts Per Minute IPM 1,500, Speed - No Load RPM 10,000, Standard Bolt Capacity in. 7/16, Tool Length in. 6, Tool Weight lbs. 2.89, CFM at Load 11, Drive in. 3/8, Inlet Size in. 1/4, Max. Reverse Torque ft.-lbs. 180, Max. Torque ft.-lbs. 180, Min. Hose Size in. 3/8, Average Air Consumption CFM 2.5, Reversible Yes, Variable Speed Yes, Working Torque ft.-lb. 20-150, Noise Level dB 97 1/2. Popular choice for exhaust systems, air conditioning, radiators, body shop and bench work Single hammer impact mechanism removes and replaces bolts up to 7/16in. Built-in power regulator controls torque. Model Number: 212. UPC: 663023000046.