The Sunline Assassin FC Fluorocarbon Line is the first fluorocarbon line released in the US featuring Sunline's advanced P-Ion technology. Offering improved slickness, abrasion resistance, and longevity, P-Ion processing chemically alters the line's surface to allow resin processing to bond at a molecular level. This processing increases line performance and allows the line to retain key characteristics longer. Also offering near invisibility in the water for the most realistic presentations possible, Sunline Assassin FC Fluorocarbon Line is also some of the best casting 100% fluorocarbon line.