Material:Aluminum Model Number:Tire Valve Stems Caps Origin:Mainland China Feature: 1. FUNCTIONS: 1.Protecting the valve core from corrosion due to direct contact with clay, water and snow. 2. Preventing the flat tire and ensure stable tire pressure.3.Replace the original bad valve cap of the tyre and also show the beauty . Installat ion method:The spiral simple installation sleeves are tight and do not require complex installation of the installation tools , ease of installation or removal. 2. Design:Fit all standard valve stem systems and Each cap is fitted with a rubber O-ring insert to ensure air tight lock and proper fit. Prevent leakage design. 3. Material: Copper . which is corrosion resistant and durable. 4. This product is 100% copper, do not rust, do not fade, directly replace the original car door black plastic cover, from the details of your car began to different. Anti-leakage Anti- gas dust. 5. Knurled head for ease of installation or removal , Just the original car's plastic cap unscrewed, the metal hat can be screwed on. Material: Copper Color: Silver Package Included: 4Pcs x Tires Stem Valve Caps