Designed for military field fiber optic cable supporting, neutral bayonet locking structure can be realized head and seat, head and head, seat and seat fast any connection. With multi-core once connected and blind insertion; connection loss, high reliability; rugged, waterproof, dustproof, resistance to harsh environments, etc., can be used in a variety of optical fiber communication network field army, military computer systems, airborne or ship borne equipment, repair and other outdoor optical cable system temporary connection. Product specifications are: 2 core, 4-core, 6-core, 8-core, 12 core Products are mainly used for: military emergency communications, broadcast television, emergency rush through optical fiber communications, mining, oil and so on