8PCS Fluorescent Tire Valve Cover Luminous Car Motorcycle Bicycle Wheel Hub Valve Cover Tire Decorative Dual ProtectionThe one-piece tire stem cover is protected with a luminous plastic insert and a transparent casing to prevent stem corrosion. A good valve cover will prolong the life of the tire. The valve cover is fluorescent, please leave it in the sun for a while, it will glow in the dark. MaterialOur tire valve stem cover is protected with a luminous plastic insert and a transparent casing to prevent stem corrosion. This valve cover can protect the valve and prevent water, dust or sand from entering the tire; prevent the valve from leaking and ensure safe driving. Luminous DesignThe inner layer of the valve stem cover is designed with luminescent materials, which can decorate the tire valve stem cover lights at night. When your wheel starts to move, it automatically flashes and creates an aperture that makes your car/motorcycle/bike look beautiful. When installing for the first time, please illuminate the tire valve with light or sunlight for 10-15 seconds, the effect will be brighter at night. Wide ApplicationThese wheel covers help keep tire inflation at the proper level, suitable for bicycles, cars, off-road vehicles, trucks and other motor vehicles, and the universal size is suitable for more cars. Easy InstallationThe inner protection of the light-emitting tire valve stem cover adopts a rotating thread design, which is convenient for hand tightening during the installation process. Package includes: 8pcs Tire Valve Cover