The williams slim torque wrenches have a forged ratchet with a push through 12in square drive for right of left hand threads the low friction torque mechanism is fully enclosed giving protection against ingress of dirt calibration is in foot pounds and newton metres an audible click and an impulse through the wrench indicates pre set has been achieved reset is automatic when hand pressure is relaxed each torque wrench is guaranteed and conforms to bs6703 and iso 6789 standards when used in accor