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, an 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. Manufactured and calibrated to the DIN-ISO 6789. Dimensions: 65.00cm x 7.00cm x 7.00cm. Weight: 2.88kg.