Ingersoll Rand 211 Ingersol 3/8 Drive Air Impact Wrench Butterfly Style 150Ft/Lbs

The most powerful 3/8 Inch palm-grip wrench you can get, with all the builtin advantages of the Single Hammer Mechanism, Pressure-Feed Lubrication System, and the Power Regulator. It packs plenty of extra power to handle bolts up to 7/16 Inch for oil pan removal, exhaust system work, transmission and bench work.