Features: Fiber optic light is a new type of lamp that saves energy and can be artisticly shaped. It combines high-brightness side-emitting plastic optical fiber filament bundle, with one end or both ends with high-brightness colorful sources. In the role of electronic control devices, can transform different colors. Because of energy saving, beautiful, durable, fiber optic lights are widely used in car interiors, new home decoration, hotels, bars and clubs, holiday parties, wedding wedding banquet, building wall light decoration, it is colorful, stylish gorgeous, dynamic, Elegant.Product parameters: Material: PMMA Refractive index: 1.49 Working temperature: - 20 Degree - 70 Degree Light attenuation (dB / km): = 350 (650mm) Numerical aperture: 0.5 Maximum acceptance angle: 60 Degree Radius of curvature: 30mmPackage instruction: You need to buy a light source additional,because it is not included in this product.Otherwise, the side glow fiber optic can not light up.