Stanleys hydraulic impact wrenches are used around the world be electric and gas utilities, construction crews, municipal agencies, and railroad crews. No other tool, whether air or electric driven, can match the power, light weight and overall efficiency of our impact wrenches. The IW12 can handle a wide variety of applications. The IW12 impact wrench features adjustable impact intensity. The rugged impact wrench mechanism is simple to maintain and has many features to give it proven reliability. Torque transmission to the operator is minimal with the swing hammer design. Designed to run from a wide range of hydraulic circuits, the IW12 is used for nut, bolt and anchor bolt driving and is equally popular for wood boring and drilling. The larger feathering trigger is convenient to use and gives the operator complete control of the wrench. The standard reversing valve provides instant reverse. For operator comfort the IW12 handle is coated with a heat insulating, shock absorbing material.