This 1/2" impact wrench by RED ROOSTER has a Dynapact impact mechanism and has a switch with 4 steps for selecting the torque when the direction of rotation is to the right. When turning to the left, the maximum power is always delivered. With the RR-160H you have a well-balanced all-round machine of the highest quality that is effortless to operate with one hand. Characteristics: • Ergonomic design, well balanced • Exhaust through isolated grip