Worked like a charm - so far no problems. Had some initial trouble figuring out how the heck these things were going to secure the rack to the roof of my vehicle as they didn't seem to grab on as I would expect. Turns out they make the rack "clamp" on to the roof sort of like a vise. Some better instructions explaining this would have helped. Only thing I don't agree with is the price. Way too expensive for 2 small pieces of metal in my opinion, plus you need 2 pair!