Specifications: Insertion loss < 0.2dB Interchangeability < 0.2dB Repeatability < 0.2dB Mechanical Durability 500 cycles < 0.2dB Operating Temperature -40-+85 degrees C. Applications: Optical Distribution Frame Optical fiber testing instruments Optical fiber communication system interface Features: 1) High reliability, strictly comply with Bellcore standard 2) Pass the inspection of the protective performance from the Quality 3) Supervision & Inspection Center of Optical Communication Products (QSICO), Ministry of Information Industry (MII), P.R. China. 4) All kinds of structures for you to choose. 5) High-precision mechanical dimensions.