8 Pcs Multicolor Bike Bicycle Car Wheel Tire Valve Cap Spoke Neon LED Lights Lamp (8 pcs each color have two)Only suit for American, British Air Nozzle adapter Devised ingenious design, easy to use.Suitable for bike, motorcycle, electromobile and car. Auto shining, No switch, 100% waterproof, fits for American, British valve. Please kindly note there is a piece of paper in the battery case that needs to be removed. Sometimes it still not work when removed the paper, then you need to put them on the valve stem, ride, and they will light up.