Fiber optic adapter (bare fiber optic adapter, standard fiber optic adapter, hybrid fiber optic adapter): \r\n\r\nfeatures: \r\nzirconia or phosphor bronze sleeve, good compatibility, high size precision good duplication, good interchangeability, good temperature characteristic, good reliability and stability, easy to operate \r\nwidely used in the odf, telecommunication networks optical communication system \r\n\r\noptical instruments measuring appliance.