0.9mm/0.6mm buffered cable has very simple structure, the bare fiber only sheathed by PVC/LSZH buffer with outer diameter 0.9mm or 0.6mm. According to the buffer tightness, it can be divided into tight buffered, semi-tight buffered and loose buffered . It is the basic unit of various multi-fiber cables, and can be used separately too into pigtails for the connetion in ODFs, equipment and narrow space.