Seaguar low-visibility Blue Label Fluorocarbon leader has a refractive index much lower than that of monofilament, making it nearly invisible. Offering superior abrasion resistance and knot strength, this high-tech 100% fluorocarbon leader sinks faster in water than other lines due to its higher specific gravity. Comes in a handy reusable bag with zipper closure. Natural color. Spool size: 100 ft. (30 meters). Lower refractory index than mono Superior abrasion resistance and knot strength Sinks faster than other lines Reusable, zip-close bag