Omega PRO hand-held air powered impact wrench designed to be used by 1 operator for the tightening, loosening or installing of threaded fasteners. 1/2 in. DR. MINI LIGHT WEIGHT AIR IMPACT WRENCH features: twin hammer design, air Inlet maximum torque 500 ft./lbs. pistol grip design for control and comfort, power to weight ratio for the toughest jobs. It features a speed regulator on the rear of the tool. There are 3-speed settings for both clockwise and counter-clockwise directions. Select the desired setting and pull trigger to operate.