With their sleek design functionality, these bicycle vacuum valves are the addition to any cyclist's toolkit. They provide a secure and reliable seal, preventing air leaks and ensuring your tires remain properly inflated. The included tools make installation and maintenance , allowing you to focus on enjoying your ride. Features -Color:Golden -Material:Aluminum alloy,silicone -Size:5.70X1.20X1.20cm/2.24X0.47X0.47in -Size:2.40X2.40X0.80cm/0.94X0.94X0.31in -Backflow prevention with cnc technology: prevents backflow in tire valves using advanced cnc technology, ensuring a reliable seal -Compatible with all bicycle types: suitable for mountain bikes, road bikes, and more, making it a versatile choice for cyclists -Quick inflation and deflation: features a vacuum valve for fast and efficient tire inflation and deflation, saving -Valve kit: includes a variety of tools and vacuum valves, providing a complete solution for and maintenance -Durable and : made from robust materials, durability and longterm use for avid cyclists Package list: 2 X Valve Cap With 2 Valve Stem