FTTH Outdoor Drop Cable G657A1, G657B, G652D, single mold drop fiber optical cable The fibers, 250µm, are positioned in a loose tube made of a high modulus plastic. The tubes are filled with a water-resistant filling compound. Its robust design, featuring FRP strength members and a steel wire, ensures durability and crush resistance. The LSZH jacket is flame-retardant. This Outdoor Single mode FTTH Drop Fiber Optic Cable provides a proper connection for FTTH networks, the operation is simple; the use is more convenient, greatly improving the working efficiency. A Fiber Reinforced Plastic (FRP)/Steel wire locates in the center of core as a non-metallic strength member.