VersaValve consists of a valve stem with a large, sturdy base plate that can be fitted with different shaped rubber grommets The large base plate ensures a solid contact with the rim bed and the adaptable grommets provide an airtight fit on all shapes and depths of rim Grommets are easily replaceable and the various stem lengths available mean valve extenders are no longer necessary on deep section wheels VersaValve will work on most rims: mountain, road or CX VersaValve kit includes following: 2 Stems 12 threaded stem nuts (2 of each color) 2 conical and 2 retangular modular grommets 4 valve cores (2 installed) 4 rubber o-rings 2 stickers Valve core Tool Instruction Diagram 80mm Alloy BlackUPC/EAN/GTIN: 810026605031