Ocathnon A Pair of Flashing LED Valve Cap Light Wheel Tyre Lamp Bulb for Car Vehicle Auto Trucks Motorcycle Bike (Multicolor) This Car Wheel Tire Air Valve Cap Light is made from premium plastic, durable. Automatic light on,displays when the wheel rotating Cool! Light up your wheels when you drive then shut off when you stop! Indicates a warning light and decoration night driving, such as night, rain, ice, snow, fog days can have prompt warning function, keep driving safe. Power Supply: 3 x AG10 button cell, Size:38 x 15 x 55mm (L x W x H);Gross Weight: 32g Universal style-Suitable for the car, motorcycle, mountain bike, folding bikes