Seaguar Red Label Fluor Leader 20lb/25yd Leader Material S20RL25 34% better knot strength than leading competitor fluorocarbons. Developed with Seaguar's exclusive, proprietary Double Structure Technology, our FC Leader is one of the best on the market. Fluorocarbon leaders' advanced strength allows use of smaller pound test vs. other fluorocarbons for more effective presentation. Incredible impact strength, knot strength and abrasion resistance. Ideal for any leader fishing from 2 to 80 lbs., fresh or salt water. As with all 100% Fluorocarbon products, FC Leader is much less visible underwater than monofilament line and virtually invisible to fish. FC is also UV resistant, chemical resistant, non-absorbent, high-density and impervious to cold conditions. Made from 100% Seaguar resins and produced using our proprietary extrusion process.