This 7 meter (~23 feet) fiber optic cable is terminated with ST (Straight Tip/Bayonet Connector) connectors on both ends. It is a singlemode fiber (9 micron core) designed to transmit data across long distances at high speeds. The cord is duplex (two fibers) which means it permits synchronous communication between devices. The cladding diameter is 125 microns. (Not for Home Theater). Insertion loss < 0.3 dB. Return loss > 50 dB. OD: 2.8mm, Single Mode, Duplex, 0.072 Optical Fiber Cable,PVC, Color: Yellow. ST SM Connector (Metal Housing Yellow Boot). Channel Marker. Shrinkage Tube. Cap.