The Sufix Invisiline Fluorocarbon Leader is a leader material made from 100% fluorocarbon that offers incredible abrasion resistance and shock absorption. Due to its light refraction properties it is virtually invisible in water and sinks four times faster than standard nylon line. Invisiline has incredibly low stretch and is highly durable making it the perfect choice for the most demanding fishing situations Features 100% Fluorocarbon Abrasion Resistant Virtually Invisible Low Stretch Shock Absorption