... 2)Multi-loose tubes 3)Double armored 4)Double PE sheath.Welcome OEM Fiber Optic Cable - GYTA53Optical fiber/optical cable/fiber ... 1) Multi Loose tube, filling jelly, aluminum tape, PE inner sheath, corrugated steel tape, PE outer sheath2) Compact structure, light weight ... external diameterApplication of temperature-40°C-60°C Outdoor double sheath double armored Fiber optic cable- GYFTA53