SILCA 25. 0 DISC VALVE ADAPTERKeeping your tires inflated is paramount before going off for a ride. Just a small change in tire pressure can be the different between a great ride and a horrible ride. However, sometimes it's hard to inflate your tires because of tight spaces that are difficult the reach. The Silca 25. 0 Disc Valve Adapter is an ultra-compact disc chuck adapter designed to access Presta valves in the tightest spaces. It's designed for racing cyclists who want to fill up their aero disc wheels with ease. It features a CNC'd 6061 aluminum alloy construction that has knurled gripping surfaces. It threads into any Schrader pump head and has an easily replaceable gasket inside. Features CNC'd 6061 aluminum alloy construction with knurled gripping surfaces Threads into any Scrader pump head so you can easily fill up your tubes Easily replaceable gasket | Silca | 25. 0 Disc Valve Adaptor Silver