Seaguar Tatsu 200 4LB has extraordinary knot strength and castability. TATSU - Japanese for Dragon - delivers an amazingly strong, yet supple, flourocarbon line unlike any other through a superior, state-of-the-art double-structure process. It fuses two custom, 100 percent flourocarbon resins, creating the world's only double structure main line. Fill your spool with TATSU and fish fierce. 100 Percent flourocarbon line Amazingly strong and supple Superior castability Nearly invisible in water Exclusive Seaguar resins