I replaced the rear brake lines on my 69 , when I was finished I get ready to bleed them starting with my passenger rear wheel and it was totally stripped off. So after trying to pound a smaller sized socket on there with no luck, I picked up a set of Twist Out sockets from the local auto parts store. Get the 3/8 twist out on there, seemed tight and it took some effort to get it to let loose, then as I kept on ratcheting i realized that I had just rounded it off worse. I have tried everything I can to get this damn thing loose, brand new vise-grips as tight as I could possibly get them, I have tried it all and my next idea is to take off that wheel and brake assembly and the backing plate and go from there. UNLESS, anyone has another idea I can try.... I realize that no matter how much you swear and throw wrenches some of these bolts just wont budge