Expert Quality torque wrench attached with a double-sided 1/2inch square drive push-through head. The push through head enables the use on both clockwise and anti-clockwise threads. The torque wrenches soft grip handle is fitted with a micrometer type mechanism adjustment knob delivering precise and accurate torquing. Each torque wrench is individually tested and calibrated to the DIN-ISO 6789 standard of +/- 4% at three points: 20% 60% and 100% of range (45Nm 135Nm and 225Nm) and every wrench is supplied with a calibration certificate and durable storage case. All these features provide the perfect combination of accuracy construction and ease of use ideal for a host of automotive workshop and garage uses especially useful when changing wheels.