The wrenches are excellent, except one. The 10 MM seems to be a factory reject as the spring pawls in the head do not always engage, nor does it feel the same as the others. It is loose and therefore I feel it will disengage when pressure is put on a bolt or nut. The rest of the wrenches are fine, and the ratches engage strong. Just the small on that is combination 8MM and 10MM seems to be defective.