ETL 12 Core GYXTW Fiber Optic Cable Unitube Light-armored cable Aerial Duct Direct Burial two parallel steel wires 1.2mm strength members with a water-resistant filling compound Jelly. This type of fiber optic cable has been praised due to its exceptional performance in Long Distance Symmetric role. As a matter of fact, ETL_GYXTW fiber optic cable plays an important role in the telecom. Please select SM or MM type