ST-ST Fiber Optic Pacthcord 1.Low insertion loss & High return loss 2.OEM ... fiber optic patch cord2.mode:Multimode,SM3.fiber core:simplex,duplex,4,6,8,12,24,48cores4.sleeves:PC & degree APC & Meatl ferrule5.cable ... ,duplex,Matrial Type:pvc,hytrel,LSZH,OFNP,OFNR ST-ST Fiber Optic Pacthcord