For $0.08 a cap there is nothing to complain about I see. They fit the valve stems on my wife's Civic, which didn't have caps, and seem to put on well without cracking or slipping. Also, I have a lot of money left over in case my car's wheels or hubcaps ever go missing. Although it would be nice if it had a cheap plastic jar instead of a plastic bag, it does fit on a storage hook.