LED light guide fiber is used to create a beautiful lighting atmosphere. The optical fiber emits bright colors (light source not included), has good light transmission and sufficient flexibility. Type: Solid Material: PMMA Fiber Diameter: 3mm Fiber Length: 5m Operating Temperature: 0~180°F How to use: Insert the optical fiber cable into the gap of the LED light and create the desired shape. The illuminator needs to be purchased separately. It is not included in this product.