【DURABLE METAL】: Bike valve adapter, made of solid brass, electroplating process, waterproof and rust-proof, not easy to damage, deform or break. 【GOOD SEALING】: There is a soft rubber seal inside the bicycle valve cap, which is beneficial to prevent air leakage during use. 【SMALL AND COMPACT】: Bicycle valve converter, 3.5g.Small in size and light in weight, it can be carried anywhere, and it does not take up space in a pocket or bag and can be used at any time. 【EASY INSTALLATION】: Easy to use, you just need to manually put the bike pump tip onto the tire valve stem and screw it in, it can be done easily by one person. 【WIDE COMPATIBILITY】: The bicycle valve adapter can convert the presta valve to the sclaverand valve, suitable for a variety of pumps, convenient for bicycles, tricycles, scooters, motorcycles, etc., with high practicability.