Wrench ‘slips’ when predetermined torque setting is reached, completely eliminating over tightening Fitted with Mechanical Torque Adjustment Locking DeviceAccurate repeatability guarantees equal tightness every time Incorporates a specially designed multi-lobed cam which automatically resets the wrench after a small movement of the handle, allowing quick progress to the next operation With a fully supported ratchet giving smooth, positive torque control, even in confined spaces Lightweight for less operator fatigueMechanical Torque Adjustment Lock Easy-to-use locking device for the torque adjusting screws. Positive, mechanical locking system. Does not rely on friction to arrest movement. Operated using a single adjusting key