Feature:1. Note: please replace these aluminum wheel air valve covers monthly to avoid unwanted oxidation and adhesion due to direct sunlight2. Sturdy and durable: these wheel air valve covers are made of aluminium alloy, hard and durable, the shape is not easy to change even if it gets pressure3. Sealed shape: the valve stems covers are complete o-ring seal, so it can prevent water, snow, and dust from coming into the tire, thus prolong the tires service life4.  Wide application: this set of wheel air valve covers fits for many kinds of vehicles with American valves caps, such as cars, trucks, motorcycles, bicycles, electromobile, etc.5. Size: diameter is 1.1 cm, height is 1.7 cm, can fit your tires well with complete o-ring seal, dustproof and waterproof .Sealed shape:The valve stems covers are complete o-ring seal, so it can prevent water, snow, and dust from coming into the tire, thus prolong the tires service life.Wide application:This set of wheel air valve covers fits for many kinds of vehicles with American valves caps, such as cars, trucks, motorcycles, bicycles, electromobile, etc.Specifications:Size (LWH): 1.1 x 1.1 x 1.7 cm/ 0.43 x 0.43 x 0.67 inchMaterial: aluminiumColors: Silver , Black , Red, Gold, Blue, Gray, Purple, Orange, Green, Light Blue, PinkPackage includes:4Pcs/Set x Tire Valve Caps