the campbell hausfeld 1/2 in. twin hammer impact wrench (tl140200av) is designed for diy projects and general-purpose applications such as automotive maintenance and repair. a twin hammer mechanism helps this impact wrench deliver up to 550 ft. lbs. of torque with reduced vibration. variable speed regulator provides low, medium, and full power output in forward and reverse directions. a soft comfort grip helps reduce fatigue. not intended for assembly line applications or commercial usage. finish your projects faster and easier with campbell hausfeld - the air power expert.