The duplex fiber patch cord is OS1/OS2 with 1.6mm cable zipcord jacket. It is Plenum (OFNP), features LC Duplex connectors, has standard insertion loss and is 7 meters in length. This cord is Keyed F - Dark Blue on both LC Duplex connection ends as part of a keyed cabling systems that provides an additional layer of physical security, mating only with matching keyed components. The cable jacket color is dark blue.