FC fiber optic adapter 1,With high precise dimension 2,Ceramic or bronze sleeve 3,Low insertion loss 4,high return loss FC fiber optic adapterFiber optic Adapters are used to calibrate two fiber optic connectors.Features:1,Accord with the standard of ANSI, Bellcore, TIA/EIA,IEC2,With high precise dimension3,Ceramic or bronze sleeve4,Low insertion loss less than 0.2 dB, high return loss more than ...