StreetFX Tire Technix MicroTechnix, Part #138-78
StreetFX Tire Technix MicroTechnix are high impact, motion-activated wheel effects that feature an ultra-bright LED light. Tire Technix are easy to attach, simply screw onto your tire valve! Available in a variety of LED colors including True Rainbow which creates an amazing rainbow of color. Set of 2. Screws Onto Valve Stem & Creates a Ring of Light When the Wheel is Moving. Battery Powered. Easy to Replace Batteries (6 batteries included).