Can be used with an extension and torque wrench for accurate tightening. Fits hex nut found on rear axles and various front axle applications on light-duty trucks. Weight: 1 lb., 8 oz This heavy-duty locknut socket is a new addition to the OTC line of task Tamers. For use on rounded or standard hex nuts found on the most popular light-duty trucks on the road. Unlike the competition, this socket is backed by the famous OTC Lifetime Marathon Warranty against defects in materials and workmanship.