1/2" Air Impact Wrench, Super Duty, 600 ft-lb Torque, Friction Ring Retainer, Pistol. The heavy duty 231C impact wrench has the reliability and durability you’ve come to expect from the Ingersoll Rand name. The powerful tool provides an even impact and is durable enough to last through the toughest work environments. Performance: Delivers a max. torque of 600 ft.-lbs. and offers enough power to install and remove stubborn bolts, lug nuts, and other hardy fasteners. Reliable Choice: Lightweight and easy to maintain, this impact wrench is a reliable choice for auto hobbyists and professional mechanics alike. Built to withstand harsh environments and repeated drops, this impact wrench won’t let you down. Adjustable Power: Its adjustable power regulator lets you easily adjust power output needed for your task at hand; The twin hammer mechanism helps ensure efficient performance with impressive rotational speeds of up to 8,000 rpm. Comfort and Control: At 7.3 inches in length and weighing only 5.8 lbs, it's compact, ergonomic design minimizes stress on your wrists and hands; The contoured handle makes it easy to carry and control .Ready to Use: For added convenience, this impact wrench arrives fully lubricated, so it's ready to use out of the box. Exclusive impact mechanism Pressure-feed lubrication.