To replace your old valve stem, start by carefully removing it from the tire. Once the old valve stem is out, take the new one and insert it into the valve hole. Make sure it is properly aligned and then secure it tightly to ensure no air leaks. These valve stems are designed to provide enhanced performance and reliability, making them ideal for both mountain and road bikes. Crafted from durable aluminum alloy, they offer durability and a sleek appearance. The vibrant red color adds a stylish touch to your bike, while the 48mm total length and 34mm main body length ensure a good fit. Features -Color:Red -Material:Metal -Size:4.80X0.90X0.90cm/1.89X0.35X0.35in -DIY colors: available in a range of colors, these valve stems let you personalize your bike's appearance to your liking -Durable aluminum alloy: crafted from durable aluminum alloy, these valve stems are built to withstand the rigors of regular use -Secure seal: the vacuum valve ensures an airtight seal, preventing leaks and maintaining optimal tire pressure -Effortless installation: the tubeless design allows for easy and quick installation, eliminating the need for inner tubes -Broad compatibility: suitable for frenchstyle tires, these valve stems are compatible with various bicycle types, including mountain and road bikes Package list: 1pcs tubeless valves