The Sealey STW601 Torque Wrench with a calibration tolerance in accordance with BS EN ISO 6789:2003 The Sealey STW601 is a 3/4\"sq Drive 237-983Nm Torque Wrench that has been manufactured from Chrome Vanadium steel that has been hardened and tempered with a chrome-plated. These Torque Wrenchs have been individually tested for ±4% accuracy and issued with an individually numbered calibration certificate. The ratchet head features flip reverse action and push-through drive to allow torquing either clockwise or anti-clockwise. Features: Supplied in carry-case with padlock Scales graduated in both lb.ft and Nm Manufactured from Chrome Vanadium steel Suitable for commercial and industrial applications Hardened and tempered with a chrome-plated polished finish Calibration tolerance in accordance with BS EN ISO 6789:2003 One of a comprehensive range of Premier Hand Tools, suitable for daily professional use Comfort grip with easy to use torque adjustment, locks when required setting is selected Individually tested for ±4% accuracy and issued with an individually numbered calibration certificate Ratchet head features flip reverse action and push-through drive to allow torquing either clockwise or anti-clockwise Specification: Drive: 3/4\"Sq Length: 1225mm Model No: STW601 Range (Both Directions): 237-983Nm(150-750lb.ft)