100% Fluorocarbon Co-Fluoride! The union of unmatched proprietary extrusion technology, coupled with the finest raw materials available, has produced P-Line HALO Fluorocarbon;the first Co-Fluoride introduced into the United States. In a tireless effort of research and development, P-Line has engineeredthe next generation of fluorocarbon fishing line by introducing HALOCo-Fluoride. Different fluorocarbon crystals have different characteristics.With HALO, P-Line has blended different types of pure fluorocarbon crystals, giving anglers the best combination of strength, sensitivity, and castability in the best all purpose fluorocarbon line available.