ST-ST Fiber Optic Pacthcord 1.Low insertion loss & High return loss 2.OEM ... duplex fiber optic patch cord2.mode:Multimode,SM3.fiber core:simplex,duplex,4,6,8,12,24,48cores4.sleeves:PC & degree APC & Meatl ferrule5.cable ... :0.9mm,2.0mm,2.4mm,3.0mm6.Compatible standard:Bellcore GR-326-CORE, NTT,ROHS7.character: ... ,Matrial Type:pvc,hytrel,LSZH,OFNP,OFNR ST-ST Fiber Optic Pacthcord