Armored OS2 SingleMode Simplex LC/SC/FC/ST 3. 0mm Fiber Optic Patch Cables are built with a protective armored layer that enhances durability, making them ideal for harsh environments where extra protection is needed. Singlemode is most commonly used for high speed, long distance applications. The armored fiber patch cable with built-in metal armor can resist mechanical damage from crushing, abrasion, cutting, and pulling in the most hazardous areas. The fiber optic jumper can be categorized by fiber optic connector types, When we name LC fiber patch cable because this. Armored OS2 SingleMode Simplex fiber optic patch cables are rugged, high-performance cables designed for long-distance single-mode fiber communication.