As expected. Ease of installation. Used on my 1986 Honda ATC250R trike. Better than rubber valve stems which can dry out or crack and then leak like mine. Solves the problem of the valve stem detaching from a branch, twig or other object when driving in the desert. These are short stems which are great for my application. They don't stick out, which reduces the chances of you damaging them. Be sure to double check your measurements for the correct hole diameter and length for your application.