Material: ABS Size: 1.6*1.3cm/0.63*0.51in Color: As shown in the figure Product features: 1. Self-luminous design: This core adopts a self-luminous design, which has a strong fluorescent effect and can clearly identify the position and movement status of the vehicle under low light or nighttime conditions. 2. Universal application: This core is suitable for various types of vehicles, including bicycles, motorcycles, cars, and electric vehicles, making it convenient for you to install and use at any time. 3. Long-lasting: This core is made of high-quality materials, with excellent oxidation resistance and durability, and can be used for a long time in various harsh weather conditions. 4. Easy installation: This core is small in size, light in weight, easy to install, and can be assembled without tools, making it ideal for DIY enthusiasts and vehicle owners to use. Precautions: 1. As we know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Package includes: 8 pcs Tire Luminous Caps