Fiber Cable, Singlemode, 864 ct., Single Jacket, Dielectric, Spider Web Ribbon, Zero Water Peak, BIF Glass, Dry, Price Per Ft., Our reels have a manufacturing variance up to 5%, you will be billed for the quantity that ships. Optical fiber cable in general is composed of all-dielectric materials. Dielectric means it has non-conducting properties of a non-metallic, insulating material that resists the passage of electric current. In addition, the signal traversing the fiber's glass conductor is light, not electrical. , AFL , LWSE-864-9-C-72-12-00N1D