The DEWALT DWMT70774 1/2 In. square drive impact wrench features a maximum torque at 600 ft-lbs which helps to break free fasteners that are stubborn or stuck. The 7300 RPM helps provide high power fastening, with a twin hammer mechanism. This impact wrench also offers an adjustable power regulator. This impact wrench offers a composite body design, and ergonomic handle with a bottom handle exhaust. It operates at 1000 bpm (blows/minute) and has a 1/4 In. air inlet.