• You will receive a tubeless tire valve stem and a removable cover as spare parts, which can help you remove the valve core and fill the sealant easily. • Our valve stem kit can reduce the risk of air leaks and tire blowouts. • Made of quality aluminum alloy and rubber materials, it is lightweight, easy to carry, and does not rust easily. • The black valve stem is more suitable for your bicycle tire. • It measures approximately 44 mm in length, suitable for most bicycles. • The soft rubber base can easily form an airtight seal on the valve hole. • Includes rubber pad accessories, sealing ring, nut, valve cap, and valve stem. • Installation is very convenient, effectively saving you time. • Once fixed, it is not easy to fall off, providing more safety for your ride. • Suitable for most bicycle rims, and the Presta valve with base is suitable for installation on different rims.