This formula of fluorocarbon sets the benchmark in invisible lines. Fluorocarbon traditionally has very hi memory, its brittle and knots are always an issue. However when this Fluoro was made they broke the mould! Strong but limp, superior knot strength and castability that is unrivalled, pick up a pack and straight away you will feel how heavy it is, this line sinks like a brick, perfect for fooling wary fish. This line is ideal for trout leaders, hook lengths and tippets.