Seaguar Tatsu is a competitive-grade 100% fluorocarbon fishing line built using Seaguar’s proprietary DSF (Double Structure Fluorocarbon) technology — a co-extrusion process that bonds two different fluorocarbon resins into a single line structure. The outer resin is formulated for maximum abrasion resistance and handling smoothness, while the inner core resin is engineered for superior knot strength and reduced stiffness. The result is a fluorocarbon line that outperforms standard single-extrusion fluoro on all key properties simultaneously: softer feel, better casting, stronger knots, and greater durability against abrasion from rock, structure and the mouth of hard-fighting fish. Manufactured in Japan by Seaguar, the company that invented fluorocarbon fishing line. Available in ten line classes from 4lb to 25lb on 200yd/183m spools.
Key Features
DSF Double Structure Fluorocarbon — Seaguar’s proprietary co-extrusion of two different fluorocarbon resins: abrasion-resistant outer layer for durability through rocks, structure and fish mouths; soft, high-knot-strength inner core for reliable, consistent knot performance under load
Superior knot strength — the inner resin formulation produces significantly stronger, more consistent knots than standard single-extrusion fluorocarbon — a critical advantage in competitive fishing where knot failure costs fish
Improved castability — softer and more supple than standard fluoro, reducing line memory and coiling for cleaner, longer casts on spinning and baitcasting tackle
100% fluorocarbon — near-invisible underwater — fluorocarbon’s refractive index closely matches water, making the line nearly invisible to fish in clear water conditions where line visibility directly impacts bite rate
Fast sink rate — fluorocarbon sinks faster than mono for better lure depth control, improved contact with bottom structure and cleaner feedback from finesse presentations
Made in Japan by Seaguar — manufactured by the originator of fluorocarbon fishing line technology, under strict Japanese quality control standards
Line Classes
#1.0 / 4lb — $90.95
#1.5 / 6lb — $90.95
#2.0 / 8lb — $90.95
#2.5 / 10lb — $90.95
#3.0 / 12lb — $96.95
#3.75 / 15lb — $96.95
#4.25 / 17lb — $101.95
#5.0 / 20lb — $107.95
#5.5 / 22lb — $109.95
#6.25 / 25lb — $114.95
Spool: 200yd / 183m
⚠️ Safety Notice: This product contains sharp hooks and small parts. Handle with care. Not suitable for children under 3 years. Colours may vary slightly from images shown due to screen settings and product availability. Always follow safe fishing practices.
