The Mountz 020340 TSC45 Adjustable Cam-Over Wrench, 1/4" Sq. Dr., 10-45 lbf.in, Gedore # 059060 is a precision production tool designed to apply a set amount of torque. When the set torque is reached the unique cam action prevents over-torquing. This Torque Wrench was designed and manufactured to meet or exceed the accuracy and repeatability requirements of ISO 6789.2003 (+/- 6% of setting).