Virtually invisible to finicky fish, Frenzy's new line of Fluorocarbon Leader Material is a must-have for serious anglers. As a result of its superior construction, Frenzy's fluorocarbon is more impact- and abrasion-resistant than monofilament and other fluorocarbon lines. It is designed with a smaller diameter than comparable fluorocarbon material to allow it to sink fast and maintain high knot strength. The light refractive index of this line is similar to that of water, making it practically disappear once it moves below the surface.