A. Features: - The stem cap is made of alloy chromium plating, which is heat - resistant, rust - proof, and durable. It can protect and decorate your car. - The car tire valve caps are compatible with all standard valve stems, including those of cars, SUVs, trucks, RVs, bicycles, bikes, and other motor vehicles. - The package includes 4 pcs of air nozzle caps and a tool, making the installation relatively simple and convenient. - Warm Tips: It is recommended to wipe the valve element clean and keep it dry, free of water, oil, or dust. Open the original valve cover anticlockwise with a wrench and tighten the product clockwise. - If you have any inquiries, please contact us. B. Specification: - Material: Alloy Chromium Plating - Cap Size: 12.7*13mm - Inner Diameter: 8mm C. Includes: - 4 * Air Nozzle Caps - 1 * Tool