Seaguar Blue Label Fluorocarbon Leader Material 100 yds 30lb Clear - 30FC100p 34% BETTER KNOT STRENGTHp Incredible impact and abrasion resistance. Fast sinking. Superior tensile and knot strength. Seaguar Blue Label 100% fluorocarbon leader material allows you to use a smaller test leader than comparable nylons or fluorocarbon for unmatched bait presentations. No wonder it’s preferred by anglers the world over.