CKAuto's Set of 4 Anodized Aluminum Tire Valve Caps and 4 American Flag Valve Stem Caps are stylish additions to any car. The valve caps are made with high-quality aluminum and are anodized for added durability. The package comes with four tire valve caps and four valve stem caps with the American flag design. While the design is impressive, the functionality of these valve caps is also top-notch. They provide an extra layer of protection against dirt, dust, and other road debris that can potentially clog the valve stems. The caps also help in keeping the valve core clean, extending the life of the valve stems. Installation is relatively straightforward and can be completed in a matter of seconds. The caps simply screw onto the valve stems, and with the American flag design, it is easy to distinguish between the tire and valve caps. One downside to these caps is that they may not fit all valve stems. It is important to check the sizes before purchasing to ensure that they will fit your car's valve stems. Additionally, the valve caps may not be as tight as some consumers would like, leading to the risk of them falling off during driving. Overall, the CKAuto Valve Caps add style and an extra layer of protection to any car. While there are some minor flaws, the functionality and design of these valve caps make them worthy of consideration for any car owner.