joyus Plastic Tyre Valve Cap for Bike  (Round)

Our valves caps are made of ABS, can light in the dark and protect the valve, prevent the water, dust or sand into the tire; preventing the valve from leaking, ensure the safe driving. 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. This tire valve stem caps is designed with luminous material. It is self-illuminating and does not require electronic devices. This means it absorbs light when there is light, and emits light when it is dark. Every time you drive in the dark, with the move of car wheels, the valve cover automatically flashes and forms a circle of light, which makes your car have a charming look. And this luxury look adds personality to your car.