Fiber Optic Patch Cords, Keystone Jack, Fiber Optic Patch Panel Pigtail,WDM,Fiber Optic Connector,Attenuator Fiber Optic Patch Cords,Keystone Jack, Fiber Optic Patch Panel,Pigtail,WDM,Fiber Optic Connector,Attenuator,Optic Fiber Adapter*Low insertion loss,high return loss*Cable diameter: 3.0mm,2.0mm,0.9mm*Fiber diameter: 9/125um,50/125um,62.5/125um*High Stability and Reliability