Shimano Mastiff FC LineProduced in Japan with strict quality control, Shimano Mastiff FC is 100% fluorocarbon line offering anglers consistency and reliability with strength, durability, and smoothness to enhance performance on the water. But Mastiff's benefits aren't limited to increased smoothness and suppleness, the most significant characteristic of Mastiff cannot be seen with the eye. Shimano engineers devised NANOARMOR technology nano size ridges across the outer