OS2 LCU to LCU Single Mode Duplex Fiber Jumper is manufactured with the highest quality corning optical fiber. It is terminated with two durable, high quality, small 1.25mm form factor, ceramic ferrule LCU connectors (both with duplex clips). Yellow zip-cord fiber optic patch cable with 2.0mm outer diameter, OFNR riser rated PVC jacket that's flame retardant, UV resistant and immune to electrical interference. 6 Meter length.