LC/SC/FC/MU 9/125 OS2 Duplex Single Mode Grade B Bend Insensitive Fiber Optic Patch Cable Grade?B?is?based?on?IEC?61753-1?and?IEC61300-3-34, which?is?stable?with?excellent?random?mating?performance?between?each?grade?B?connector. Max?insertion?loss?of?random?mating?of?grade?B?is??0.25dB,?however,?random?mating?of?standard?patch?cable?will?be?over?0.5dB,?even?over?1.0dB?especially?for?APC?connector. It meets large