Features: Universal Compatibility: Our bike tire valve adapter is designed to fit a wide range of mountain and road bike tires, ensuring compatibility with various models for easy and convenient use. Leak-Proof Design: The aluminum alloy construction of our tire pump valve adapter effectively prevents leakage, providing a secure and reliable seal to keep your tires inflated for longer periods. Easy Installation: With our bike tires air mouth caps, converting your valve cap is quick and hassle-free, allowing you to effortlessly adapt your bike tires to different inflator pumps without any tools required. Durable Construction: Made from good-quality materials, our tire valve stem covers are built to last, offering long-lasting durability and protections for your bike tires against dust, dirt, and debris. Versatile Application: Our aluminum alloy tires air nozzle covers adapter is suitable for a wide range of bike tires, making it a versatile accessory for cyclists of all levels looking to maintain optimal tire performance. Specifications: Material: Aluminum Alloy Length: 1.8cm Note: Due to the screen lighting effect, the actual color of the product may be slightly different. Due to manual measurement, please allow size error. Include: Choice1: 1*Bicycle Valve Adapter OR Choice2: 5*Bicycle Valve Adapters