The norbar torque screwdriver is accurate comfortable durable and easy to use its accuracy exceeds the minimal requirements of iso6789 plus minus 6 for tools up to 10 nm it is supplied with a 14in hexagon bit holder it comes supplied with a traceable calibration certificate for the clockwise direction the comfortable durable handle is constructed using two materials a base material for strength overlaid with a soft feel grip for comfort and slip resistance for maximum versatilit