0.37mm 25lb 200m.
100% Fluorocarbon produced in Japan. Simply the best fluorocarbon main line you'll find.
Fluorocarbon sinks like a brick and is virtually invisible underwater. Ideal for pressured waters!
I personally use fluorocarbon when I want the line to sink tightly to the bottom at distances up to about 80m.
Beyond 80m, braided line fishes better (or nylon, when braided line is not allowed).
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