Place prepared and glued with alcohol. It's only been two weeks but they're through the car wash and I don't think they'll be out any time soon. One end doesn't seem to go in as much as the other end. If I knew that, I'd cut a small rib down the middle from the bottom. I think it would help. It is too late now that they are bound. You have to look for it to notice it. They look like part of the car and match my black paintwork perfectly. I would buy again.