Describe:
Portable and durable, easy to carry and light in weight.
Made of high quality lightweight ABS.
And decorate your wheels, corrosion resistant and waterproof.
Easy to install. Just screw it on
First absorb the energy of all kinds of visible light and store the light energy, then it can automatically emit light in the dark, and it can be recycled infinitely

Specification:
Material: ABS
Size: About 1.6cm *1.2cm, inner diameter 0.8cm
Applicable: Universal for models
Quantity: 4

Package includes: 

4* RED  luminous valve cap

Note:There will be slight color difference between the real object and the picture.