... tight buffer fibers, armored flexible metal tube, wrapped with a layer of Kevlar aramid yarn, completed with colored outer PU jacket.Technical Advantages ... :1. Armored flexible metal tube, anti-rodent. 2. High ... and reliable.5. UV HFFR water blocking jacket.6. Comply with standard YD/T, 1258.4-2005, IECA-596, GR-409 ...