4 Pcs Car Bike Motorcycle Tire Wheel Valve Led Light Bicycle Sport Valve Lamp Description: Easy to install.Just remove your existing tire valve cap and screw these on instead. Replace your automobile valve caps cause this set comes with 4 valve cap LED lights. When you're moving the lights will turn on automatically.Amazing in the daytime but absolutely magical at night when the elegant sultry green comes alive in the night. Perfect when you're racing down the highways at 230 km/hr neck and neck with another racer. Waterproof and shockproof. Light color:green/red/yellow/blue. Powered by 3 x cell batteries (include). Package includes: 4 X Tyre lights