Features: Ensures a safe ride with our vacuum tire valves, featuring high efficiency sealing to prevent air leaks and maintain optimally tire pressure. Crafted from aluminum alloy, this valves is pressure resistant, for various bicycles models for long lasting performances. For all cycling enthusiasts and professional riders, especially those seeking enhances performances. Perfect for daily commuting, long distance rides, and mountain biking, adapting seamlessly to diverses cycling environments. Upgrades your bike's reliability and enjoy peacing of mind on every journey with this essential tire accessory, a must have in your cycling gear collection. Specifications: Component:Aluminium Alloy Size:Approx.60mm/2.36inch Color:Black/Redness/Blue/Gold Package Includes: 2pcs Bike Valves Stems note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.