Tire Flash lamp - TOOGOO(R) Car Bike Motorcycle Valve Cap Tyre Wheel Fireflys Lamp LED Light Blue Fits most valves of road, mountain bicycles, motocycles and cars. When your wheels start to move, they automatically flash light up creating a solid disk of light that appears to hover above your wheels. When you stop they will switch off to save battery power. Increase night time and bad weather visibility for safety and bring more enjoyment to your drive. Please pay attention to the size to make sure the covers fit your vehicles perfe