This Ingersoll Rand air impact wrench delivers smooth power unaffected by pressure changes. U.S.A. Key Product Specs Drive (in.) 3/8 Average Air Consumption (CFM) 2.5 CFM at Load 11 Speed - No Load (RPM) 10,000 Blows Per Minute (BPM) 1,500 Max. Torque (ft.-lbs.) 180 Working Torque (ft.-lb.) 20 - 150 Inlet Size (in.) 1/4 Min. Hose Size (in.) 3/8 Standard Bolt Capacity (in.) 7/16 Variable Speed Yes Tool Length (in.) 6 Additional Product Specs * 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