Do you want to make your bike/car/Bicycle more attractive in the night?It is a pair of wheel Valve Cap Light that will light up when the wheels move. It turns up very beautifully and forms a circle of light. Make your bike super beautiful and attractive.Scratch resistant, durable and practical.Fits all wheel sizes. Weather Resistant.Features- Colors: red, yellow, green, and blue- Material: High quality plastic and aluminum alloy- Size: 6.3 x 1.8 x 1.8 cm / 2.5 x 0.7 x 0.7 inches (L x W x H)- Powered by 3 AG10 button cell batteries (included)- Bike tire lights goes off when parked and comes on when driving.-Tool Free, easy to install and remove. No tools needed! Bike wheel Lights fix on the wheel tightly, no worry about falling. -Remove the insulating paper before use and simply screw the wheel light onto the valve nozzle of the wheel.- Suitable for cars, bikes, mountain bikes and motorcycles.Package includes2 x LED Bike Wheel Lights 3 x AG10 button cell batteries (included)