Nickel Plated Copper: Tire valve core is made of high quality nickel plated copper material, high strength, reliable performance, more durable, and long service life. Scope of Application: American tire valve core is compatible with electric vehicles, bicycles, motorcycles, automobiles, having wide compatibility. Essential Tool: Whether in your journey or in your garage, the car spare valve stem core can play a huge role. It can be used in the car repair shop. Compact and Portable: Valve core is light in weight, small in size, easy to carry, will not increase your burden, can bring you more convenience. How to Use: Adjust the tightness of the USA valve core. Unscrew the valve core when repairing the tire, so that the air in the inner tube can be exhausted, so that it is easier to remove the tire.