The 50FIBLCST5 5m LSZH LC to ST Fiber Cable features 50125 micron fiber for high-speed high bandwidth data transmissions over Gigabit Ethernet & Fiber Channel networks with support for duplex multimode applications This LC-ST patch cable is housed in a LSZH (Low-Smoke Zero-Halogen) flame retardant jacket to ensure minimal smoke toxicity & corrosion when exposed to high sources of heat in the event of a fire Making it ideal to be used in industrial settings central offices & schools as well as residential settings where building codes are a consideration Each Duplex 50125 (OM2) Multimode Fiber Patch Cable is individually tested & certified to be within acceptable optical insertion loss limits for guaranteed compatibility & 100 reliability & is backed by our lifetime warranty