The powerful tool for large screwdriving applications. For heavy screw joints on trucks, construction machinery, in commercial vehicle construction, in the petrochemical and other heavy industries. Auxiliary handle with backing pad that can be fitted in two positions for better handling. Hanging hook for attaching to a balancer. V-groove impact mechanism with low recoil torque and long lifetime. High impact performance with low weight. Forward/reverse rotation for tightening and loosening. Torsion bars (special accessory) guarantee adherence to desired torque. Easy-to-change tools.