Excel Outdoor/indoor OS2 4*9/125 optical fibre backbone cable tight, tight buffered, LSOH black, rodent-proof, the type of device is: monomode, the type of cable is: optical fibre backbone cable, according to use: outside/inside, the cable's categorical classification: OS2, the number of optical fibres: OS2 pcs, the diameter of the optic fibre is: 9/125mm, the colour of the cable: black, the sheath of the cable: LSOH, level of protection: black.