Sealey Torque Wrench Micrometer Style 3/8"Sq Drive Calibrated STW903BFlip reverse Chrome Vanadium steel ratchet head with a smooth action mechanism. Scale graduated in Nm and lb. ft. Calibration tolerance in accordance with BS EN ISO 6789 1: 2017. Wrenches are individually tested to standards with 4% accuracy and each wrench is issued with an individually numbered test certificate. Aluminium knurled handle for comfort and control. Supplied in an EVA tray. PREMIER BLACK One of a comprehensive range of hand tools,