These tire air caps are made of , which are practical and durable, and can be used for a long time. Bike Tools can the valves damage, prevent tire leaks, and extend the life of the stem. Widely used in bicycles, mountain bike tires. Will be your . Features -Color:Assorted Color -Material:Aluminum and copper -Size:5.50X1.50X1.50cm/2.16X0.59X0.59in -They are made with excellent craftsmanship, durable and good in texture. To prevent and rain entering or car, different valves caps have different uses. -These covers can help prevent leakage, dirt and other objects damaging cores. -Replaced the leak of the old make the tire renew. Stop air leaks old valves. -Easy to install, just need screw them onto tire valves stem and it is very convenient. -The products can not only help prevent leakage, but also prevent dirt and rain entering your tire. Package list: 1 x Withdrawal Tool 6 x Valves Cores 6 x Valves Caps 2 x French Style Caps