Feature:1. Note: Please replace these aluminum air valve covers every few months to avoid unwanted oxidation and adhesion due to direct sunlight2. Sturdy and Durable: These air valve covers are made of aluminum alloy, hard and durable, the shape is not easy to change even if it gets pressure3. Sealed Shape: The valve stem covers are with a sealing ring, so they can prevent water, snow, and dust from entering the tire, which prolongs the life of the tires4. Wide Application: This set of air caps fits many kinds of vehicles with American valves, such as cars, trucks, motorcycles, bicycles, electromobiles, etc. Specifications: Size: 6J: 1.1x1.2cm Metal: 0.9x1.5cm (Before purchasing, please confirm whether the valve size is suitable) Material: Metal Colors: silver, black Package includes: 4pcs/set x tire valve caps