GRAY Presta Valve Core Extender<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>GRAY’s newest custom-designed valve extensions are now designed for "inline" use</li><li>Inline extensions are installed between your existing valve stem and the Presta valve core， creating a more reliable seal. A rubber o-ring at the base of the extension prevents leaks.</li><li>Inline valve extenders can only be used with Presta valves which feature a removable valve core. For easy core removable and installation.</li><li>Available in two lengths (40mm and 80mm). Compatible with all carbon wheels. 40 mm for 5.0 and 45WLX， 45WLC wheelset / 80 mm for 9.5 and 80WLC wheelsets.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41KkRlRR67L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61LW5uqgvGL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41K8rNr3b5L.jpg" noproxy>