Muc-Off Tubeless Valve Stem. Features: Quality valves that now feature a new air flow system that is compatible with most tire inserts 6 slots machined into the base of the valve stem allows them to be compatible with most tubeless tire inserts and allow your tubeless sealant and air to flow freely when running tubeless tires inserts Sold as a pair and available in a variety of colors 7075 machined aluminum valve stem and cap Third party online retailers must be preapproved by manufacturer Specs: Color:gray Length:44mm Valve:Presta Weight:31g