The Norbar Torque Screwdriver is accurate comfortable durable and easy-to-use Supplied with a 14in hexagon bit holder designed using a 4mm hexagon stem The comfortable durable handle is constructed using 2 materials; a base material for strength overlaid with a soft feel grip for comfort and slip resistance Allows for easy torque adjustment without the need of additional specialist tools and also has a lock to prevent accidental adjustment of the set torque It comes supplied with a traceable calibration certificate for the clockwise direction Accuracy meets the minimal requirements of ISO 6789-12017