Seaguar Blue Label 50 12LB has incredible impact and abrasion resistance. It is also fast sinking and has superior tensile and knot strength. This 100Percent flourocarbon leader material allows you to use a smaller-test leader than comparable nylons or flourocarbon for unmatched bait presentations. 100Percent Flourocarbon Line Incredible impact and abrasion resistance 34 Percent better knot strength Nearly invisible in water Exclusive Seaguar resins