The Mountz 020339 TSC10 Adjustable Cam-Over Wrench, 1/4" Sq. Dr., 2-10 N.m - Gedore # 056040 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).