Ingersoll Rand 2235TiMAX Drive Air Impact Wrench, 1/2 Inch 930 feet-pounds of maximum reverse torque Nut-busting torque of 1350 feet-pounds Finely tuned twin-hammer impact mechanism Born from the legendary durability of the Ingersoll Rand 2135 Series.Driver type:Square, Hog-Ring Built with a titanium hammer case, steel-wear plate and composite housing that protect the tool from the harshest environments