The DEWALT DWMT70775 3/8 In. square drive impact wrench features a maximum torque at 300 ft-lbs which helps to break free fasteners that are stubborn or stuck. The 11,000 RPM helps provide high power fastening, with a twin hammer mechanism. This impact wrench also offers an adjustable power regulator. It has shock resistant housing bumpers to help protect the housing, a composite body design, and ergonomic handle with rubber cushion grip, along with a bottom handle exhaust. It operates at 1200 bpm (blows/minute) and has a 1/4 In. air inlet.