I'm giving this wrench a flat 5 stars because it's awesome and looks well made, at least for typical family car use. While I don't use it, I'm "sure" it will do any of my cars loose, but I also definitely don't think it's the "first choice" to run it on an HD truck or a double or whatever ridiculous handle to use. I'm guessing it won't even withstand 200 ft-lbs. So this is a superficial review, but 5 stars for what it's worth ($40 flip key, nice).