4pc - OPT7 Aura LED Expansion Pack - 3.5" Inline Strips with Splitters and Extensions This expansion pack includes 4 sets of 3.5" strips, extensions and Y-splitters Our Smart-Color&trade; LEDs mixes colors at the micro level that results in a brilliant colors true to the eye Compatible with any OPT7 Aura kit Note: This expansion pack will only work with OPT7 Aura Kits and will not work on its own. These strips require our OPT7 Aura Control Box to power these strips.