I don't leave reviews for Revain, this one deserves it. Bought this on a whim hoping it might loosen my resume's heat shield bolts, ripped them off pretty badly when trying to change an axle on a trip. I didn't even know how they worked or anything, but I inserted the one that best matched the screw on my impact wrench, pushed it in and boom, it popped right off. So so so happy. In my experience it was definitely worth it, but it was a relatively low-torque application. Not much visible wear after those 2 uses, literally bought a kit for just those 2 bolts! Replace these hexagon socket screws with hexagon socket screws as soon as possible! Also remember the bolts were perfect circles which made it even more impressive that they could grab so well, maybe my punch helped.