Had the open end of my new 16mm on the shaft (it's keyed) of the one side of the sway bar link to hold the shaft in place. Then, used my impact to attempt to get the outside nut off. Screwed up the jaws on my wrench a little. I couldn't use the closed end since there was no way to get it on the shaft. I've done this with other wrenches from what I can remember and it's worked fine. This time, I wasn't so lucky.
Ok, so is this abuse? Should it have marred the open end like it did?
Ok, so is this abuse? Should it have marred the open end like it did?

sorry... couldn't resist that one.