
Not sure how they will hold up over time but they had no problems, no damage or marks on the steel when removing two very striped and rusty bolts. Although I had to use a different head than the size of the bolt, once I found the right one, I attached the tube to my 12" socket and they came out right away. I've tried 6 and 12 point socket wrenches and then vices, channel locks and a pipe wrench and nothing would move them.