Yes I know it comes with the valve stem & keeps it from a constant spin.probably comes with the knobs; officially they are the white, plastic insert thingy that keeps the knob from spinning on the stem.
lol...It's cool no harm no foul:thumbsup:Carlos,
I couldn't resist; no harm intended.
Do you know where that part can be purchased?It's a limiting device ring. It keeps the valve from opening fully. Form of anti-scald