Abundant Quantity to Use: enough to meet your use and replacement needs, and you can share them with others No Air Leakage: our valve stem caps come from exquisite technology, with a rubber sealing design, creating a tight sealing effect, not leak in the process of your long time driving, making your driving more safe, allowing you to use them at ease Luminous Visual Effect: glow in the dark tire valve caps uses luminous material, to present a fluorescent and charming visual effect at night, easy to draw people's attention; When your wheel rotates, it automatically flashes and forms a beautiful aura; It is recommended to be illuminated in strong light for a period of time before use, so that the luminous effect can be more obvious Simple to Assemble: fluorescent valve covers are designed with swivel thread, easy to tighten by hand without the need for other tools, saving time and labor; Also, they are simple for your disassembly and replacement, also help to avoid internal stem breaking Applicable Usage: our light up tire caps for cars have wide applicability, suitable for most cars, trucks, SUVs, RVs, motorcycles, bikes and other vehicles; Color: Blue Material: Rubber Package Contents: 10 * Luminous Cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.