Finally, with Yo-Zuri TopKnot Fluorocarbon Line anglers have a reasonably priced fluoro mainline with the enhanced performance of a premium fluoro leader. Its outstanding strength-to-diameter ratio means you can fill up with a quality fluorocarbon line having an impressively thin diameter with superior knot strength, high break strength, and reliable abrasion resistance from beginning to end. Yo-Zuri TopKnot Fluoro is also noteworthy for its durable clarity, so its underwater invisibility remains intact over extended use. Low memory for smooth handling. Mainline that performs like leader material Outstanding strength-to-diameter ratio Superior knot strength High break strength Abrasion resistant Durable clarity Low memory