fiber optic SC SM patch cord 3 meterDescriptionFIBER OPTIC JUMPERS are ultra reliable components featuring low insertion loss and return loss. They come with your choice of simplex or duplex cable configuration and are made to conform to IEC,Telcordia GR-326-CORE Standard.Environmental Reliability TestThe performance of the patchcords has been carefully designed to meet the IEC standards, GR-326-CORE, in the test of optical characteristics, vibration test, thermal cycling, impact resistance, salt spray erosion, thermal aging, humidity resistance and others