Product information "Steel armored fiber patch cable OM4, Duplex LC/UPC - LC/UPC, 7.5 m" from LogiLink Professional Logilink's armored fiber optic cables are protected by a flexible yet robust and shatterproof steel jacket. This means that fiber optic cables can now be installed in industrial areas and other harsh environments. The flexible steel spiral tube provides protection against physical damage without compromising the flexibility or functionality of the fiber connection.