Christmas Sale 2015 Bike Light with No Battery Mountain Road Bike Bicycle Lights Leds Tyre Tire Valve Caps Wheel Spokes Led Light Bl0157 Tire valve cap lights screw onto the valve stem of your car, bicycles or motorcycle in seconds. Universal fitment and easy to install no special wires, can be easily installed and removed. Fits most valves of road, mountain bicycles, motocycles and cars. Bright led will turn on while the vehicle is moving and off when stop Car lights increase night-time and bad weather visibility for safety.