Seaguar Blue Label Fluorocarbon Leader Material 25 yds 15lb Clear - 15FP25p 42% BETTER KNOT STRENGTHp Virtually invisible. Smaller diameters. Incredible knot and tensile strength. Perfect shock leader. Extremely soft, with low memory. Seaguar Fluoro Premier & Seaguar Fluoro Premier Big Game. We took fluorocarbon to the next level. After all, we invented it.