SG500 is a Stranded 1/2" or 13mm diameter Sideglow cable. Much brighter then other cables going for more.This cable has a 1mm Fiber for brighter light. Used for Cove lighting, Pools, Signs, and More. Used for Pools, Water features, Signs, Landscapes and More. Recommended: FOP150-DMX-R HID. min 5 ft length. SOLD PER FOOT. Standard PMM plastic Fiber. We add an Algicide, Fungicide and UV chemical added to jacket to improve life of the Vinyl Clear Jacketed cable.