Ingersoll Rand 3/8-dr. Super-Duty Air Impact Wrench generates up to 180 ft./lbs. of torque - IR212 The popular choice for professional mechanics working on exhaust systems, air conditioning, radiator, body shop, and bench work is this 3/8-dr. Super-Duty Pneumatic Impact Wrench. It's the most powerful 3/8 pistol-grip on the market, offering all the advantages of the single-hammer impact mechanism for removing and replacing bolts up to 7/16 without a hassle. 180 ft./lbs. maximum torque, with less vibration. Built-in power regulator. Handle exhaust. Pressure-feed lubrication system. SPECIFICATIONS: Drive: 3/8; Max. Torque In Reverse: 180 ft./lbs.; Working Torque Range: 20-125 ft./lbs.; Free Speed: 11,500 RPM; Average Air Consumption: 2.5 CFM; Air Consumption At Load: 11 CFM; Air Inlet: 1/4 NPTF; Min. Hose Size: 3/8; Length: 6.6.