It seems silly to write a review for something as small as a tire cap, but they really are great. The ones that came with my car were very flimsy and cheap. Part of the cap simply broke off, leaving only the screw part. So I bought them hoping that the air valves for my tires would shut off. They fit my base car perfectly, are unobtrusive and are heavier than the ones that came with the tires. I'm very happy with this purchase, especially since I didn't have to go to a car shop (not my favorite place to shop!).