Lezyne Clik Valve Cores by Schwalbe Description: The Lezyne Clik Valve Cores by Schwalbe represents a radical rethink of inflation components. These innovative valve cores have a remarkably simple design and construction, and they can be inflated with either a pump outfitted with a Clik specific pump head/air chuck or any press on lever/gasket style presta valve pump head. Not only are the valves incredibly simple to use, they are extremely robust and have a large internal bore so they allow much more air to pass through, which means many tubeless tires now can be seated with a traditional floor pump. Finally, the connection between these Clik valves and a Clik specific pump head/air chuck requires very little space and can easily fit within small wheels, aerodynamic disc wheels, or any other wheel that are traditionally very difficult to fit a pump head/chuck into. Notes: This kit only contains the Clik valve cores for converting a presta valve over to the Clik valve standard. Presta tubes, tubeless presta valves, Clik specific pumps, and Clik pump heads/air chucks are all available separately. Features: Unique design is more durable than a presta valve core and works by simply pressing on or pulling off the pump head/air chuck Works with a Clik specific pump head/air chuck or gasket style presta valve pump heads that press on to the valve (not compatible with thread on presta valve pump heads) Extremely large air passage allows up to 1.5 times more air to flow to pass through than a typical presta style valve core Clik valve core is compatible with any presta tubes or tubeless valve body with a removeable/replaceable core Each order includes a pair, or two (2), Clik valve cores