The PowRyte 3/8 In. impact wrench has a powerful rocking dog hammer mechanism that provides an incredible 120 ft/lbs of torque and has a free speed of 11,000 RPM. It features a comfortable grip, one handed controls and a durably constructed body allowing for simple and long lasting user experience. Due to its compact size and weight, its great for fitting into small tight spaces and with 4 different torque settings it is great for light engine work, small engine repair, tire rotation and light construction.