Be cool! Be seen! Wheel Brightz Color Morphing Lights use 20 MicroLED lights to gradually transition through the rainbow, creating a variety of brilliant colors! Each pack includes one string of LED lights in clear waterproof tubing (7') with connector battery pack, end cap, and six mounting ties to secure LED light string. Battery pack attaches to a cross section on standard spokes. It will not work with an abnormally high or low number of spokes. Requires 3 AA batteries (not included) for over 48 hours of light. Wheel Brightz can be cut to size to fit almost any wheel 20" and over.