Pair of Skull Head Shaped Wheel Tyre Lamp Valve Cap Light for Car/Motorbike/Bike? Light color: colorful gradient Easy to install and remove Screws in the valve stem of your car, bicycle or motorcycle Auto shining no switch, with light &amp; motion sensors Fits for most bicycles, motorcycles and cars;Powered by 3 Pcs AG10 batteries (included);Package included:- Bike LED light x 1 pair (not fit for presta valves)- Button cells battery x 3