Feature:1. Note: Please replace these aluminum air valve covers every month 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: valve stem covers are complete sealing ring, so it can prevent water, snow and dust from entering the tire, which prolongs the service life of tires4. Wide Application: This air cap kit fits many kinds of vehicles with American valves, such as cars, trucks, motorcycles, bicycles, electromobiles, etc.5. Size: diameter is 1.1cm, height is 1.7cm, it can fit your tires well with complete sealing ring, dustproof and waterproof. Sealed shape: Valve stem covers are a complete sealing ring, so they can prevent water, snow and dust from entering the tire, which prolongs the service life of tires. Specifications:Size(LWH): 1.1x1.1x1.7cm/ 0.43x0.43x0.67 inch Material: Aluminum Colors: Silver, Black, Red, Gold, Blue, Grey, Purple, Orange, Green, Light Blue Fitment: Apply to any motorcycle such as For BMW:R1200GS/AdventureR1250GS/AdventureR1200r1rsR1150GS/AdventureR1100GSF800GS/AdventureF650GS/Sertao/DakarF700GS F650GSG650GSHP2S1000XRR NINETG310 GS Double CylinderNote:1.