LEDGlow’s Million Color Pro Interior Lighting Add-On Kit allows you effortlessly add additional SMD interior lighting tubes to your existing Million Color Interior Lighting Kit. This 2 piece add on kit includes 12 inch tubes that house a total of 18 SMD LEDs, and include two 3 foot USB expansion power wires for easy installation. LEDGlow's LED interior lights include a one year limited warranty and free lifetime technical support.