These extension cables are designed to be used to extend the distance between your recessed light and it's driver. They are available in 2 foot, 5 foot, 10 foot, 25 foot and 50 foot lengths. They come with preattached connectors designed to work with the connectors on your Ultra Thin lights. Makes installation a breeze requiring no wire cutting and splicing. Multiple cables may not be connected together to make longer lengths. These cables are sized appropriately for each length and should not be used for longer distances than they are rated for.