... 2-288 cores Singlemode,multimode optical fiber cable Aerial+ duct optical fiber cable GYTA Detailed Product DescriptionSinglemode, multimode optical ... ,Moisture-proof and rodent-proof.Recommended laying methods: Aerial, Duct.Structure Characters: Metallic Strengthen member(phosphated steel wire) Double ... providing and excellent moisture barrier.Technical data: Aerial+ duct optical fiber cable GYTA