Each under car kit comes with tubes for the sides, tubes for the front and rear, built in transformers in each tube to simplify installation, all necessary installation hardware and instructions. Each neon bulb is encapsulated in high impact silicone to withstand the toughest road conditions and elements. The Neon Series was designed for the do it yourselfer and hobbyist in mind. Quick installation and consumer friendly pricing make this a winner for any auto neon enthusiast. Underbody neon tubes are not limited to undercar application they are also great for truck bed rails,engine compartment,anywhere imaginable (simple 2 wire installation) basically any application which requires a longer lighting configuration.