Stupid question I have wanted to ask, how does the wrench work, it would seem to me that it would tear up a nut that was not loose, also because they appear usually thinner than than most nuts it seems to me they would wear a pattern in the nut or bolt again eventually destroying it, also I notice alot of them are open in the center, take this one for example, was this just a weight saving gimmick AKA a steel saving deal