A. This is a valve cap product suitable for vacuum tires of bicycles, cars, motorcycles, and electric vehicles. It is made of aluminum alloy, which is sturdy and durable. B. This product comes in a variety of specifications, with multiple combinations available for selection to meet the needs of different users. For example, there are combination sets that pair夜光 elements with other colors. Among them, only the green ones have a夜光 effect and will emit a unique glow at night. This not only adds a unique visual effect to the vehicle but also improves the vehicle's visibility to a certain extent. C. This valve cap is compatible with various types of vehicles. Whether it is a bicycle for daily riding or a commonly used car, motorcycle, or electric vehicle, it can fit perfectly and protect the valve stems of various vehicles. D. Using this valve cap can make your vehicle show a different style in details.