Bolt Motorcycle Hardware (2007-GRM) Valve Stem Grommet and Cap These durable rubber grommets seal tightly around valve stems and are contoured to fit off-road rims Custom contour allows for even distribution of stress to seal out the elements Seals out dirt and moisture which can cause corrosion, friction and flats This kit will do two sets of wheels Includes four rubber grommets and four black plastic valve stem caps