... Diamond fiber optic adapter 1)Discordia, ANSI, TIA/EIA, NTT and JIS compliance 2)Low insertion loss 3)High return loss ... , square type, single D type and double D type. All FC optic adapters are with metal housing, single-mode FC fiber optic ... are with bronze sleeves. Features:Discordia, ANSI, TIA/EIA, NTT and JIS complianceHigh precision alignmentLow insertion lossHigh return lossGood repeatability ...