Bare fiber optic adapters provide a simple and effective way to use unterminated fibers with commercial receptacles.Use of such bare fibre adapter is easy,simply strip and cleave your fiber and insert into the bare fiber adapter.accommodate 81 micron, 125 micron or 140 micron cladding fibers with a typical insertion loss of less than 1dB.These fiber optic adapters are recommended for power meter hook-ups, temporary system repairs or wherever a quick fiber connection is required.they are used to quickly and easily terminate the bare fiber to the fiber optic cable equipment.