Flip reverse Chrome Vanadium steel ratchet head with 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 storage case. Features & Benefits:Range: 40-210Nm(29.5-155lb.ft).Flip reverse Chrome Vanadium steel ratchet head with 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 storage case.Lifetime guarantee*.Model No. STW400 Specifications: Model No STW400 Brand: Premier Drive: 1/2"Sq Length: 430mm Nett Weight: 1.008kg Range: 40-210Nm