Tripp Lite's 3m single-mode duplex fiber optic SC/SC patch cable is manufactured from 8.3/125 zipcord fiber. Cable has SC connectors on each end, PVC jacket and is FDDI and OFNR rated. Duplex single-mode fiber is most commonly used in LAN applications. Tripp Lite warrants this product to be free from defects in materials and workmanship for life.