Solid and Durable: Made of copper, this product is highly durable and resistant to rust and corrosion, ensuring a long service life Easy to Use: Features a built-in magnetic core for easy inflation and deflation. Simply remove the existing valve cap and securely attach the adapter. The bottom surface of the extension rotates freely for convenient installation Universal Fit: These tire valve extensions are compatible with cars, trucks, motorcycles, trailers, and recreational vehicles equipped with standard tire valves Corner Design: Solves the issue of limited space between the valve and spokes, allowing easy use of a pump to check tire pressure or inflate tires Double Sealing: The American valve includes an integrated sealing ring for reliable performance. The pure copper construction provides high strength, resists aging, and ensures stable operation