This afternoon as I was finishing up an oil change, I was putting the plastic engine shield back on at the bottom of the engine/car. I have rounded off a bolt. I know there are many "home remedies" to this problem, like chisels, hack saw blades. I don't have the room in the garage to do this, I saw where Irwin tools makes a socket designed just for this problem. Anyone have any thoughts, are they good, what about Craftsman, Kobalt, etc. Thanks everybody!!!