BWSHLF Tubeless Presta Valve Stem 40/44/55/60/65/80/100 mm, Super Light Alloy Presta Valve Stem Kit with Valve Core Remover Tool and Valve Stem Caps - Multiple Color and Size Options(Pair)Super Light & Anti rust: Made of lightweight anodized aluminum, our tubeless presta valve stem is not only lightweight but also anti rust. Superior Seal: With a removable valve cover, O ring, and lock nut. The large soft rubber base can easily form an airtight seal on the valve hole with a diameter of not more than 8MM, ensuring that the nut can be tightened and protecting the rim. Removable Valve Core: The valve core is a removable cover, our valve