Draper - 1/2" Sq. Dr. 'Push Through' Torque Wrench With a Torquing Range of 50-225NM. Expert Quality, double - sided, push - through 1/2" square drive head allows the user to operate the wrench on both clockwise and anti - clockwise threads. For clockwise and anticlockwise threads easy adjustment knob allows simple setting of the micrometer type mechanism. Each torque wrench is individually tested and calibrated to the DIN - ISO 6789 standard and Supplied with a calibration certificate. Display packed.