The tire valve caps can protect the tire valve from dirt and dust and extend the service life of the tire. It can also be used to replace the broken original valve cap and keep the wheels working well. Fluorescent Effect: The fluorescent effect on dark roads adds a shiny and luxurious look to your car. Make your night cycling cooler and greater! Durable: Made of high-quality ABS material. Texture design is easy to hold and use. Easy Installation: Easy installation without tools. Simply screw it onto the tire valve stem. It's easy to install or remove when you want to check air pressure. Widely Used: The inner diameter of tire valve caps is 8mm, fits most cars, buses, SUVs, trucks, motorcycles, bicycles, etc., keeping vehicles' tires at the proper inflating level.