Bonelinks fiber optics adapters are designed to realize simplex or duplex fiber optics patch cords interactive connections. Adapters can be divided into two types basing on ceramic ferrule and phosphor bronze sleeve. Ceramic sleeve adapters are mainly used for ceramic ferrule fiber optical patch cord conjunction and phosphor bronze sleeve adapters are mainly used for high power ferrule patch cord conjunction. Fiber patch cord conjunction attenuation is mainly influenced by adapter ceramic sleeve. Bonelinks ceramic sleeve adapters, typically, insertion loss will less than 0.2dB at most and phosphor bronze sleeve adapter insertion loss will less than 0.3dB at most.