"This great assortment (links below) of lines will meet the needs of any angler, saltwater or freshwater. Designed to allow the best possible presentation and casting. The Uniform Sink uses technology allowing the tip to sink faster, making for a straighter, deeper line, free of sag. 90 ft. Overstock. USA. Size: Type I: Sink Rate 1.50-2.25 ips, Line Size WF6S, WF9S. Type II: Sink Rate 1.75-2.95 ips, Line Size WF8S, WF9S. Type III: Sink Rate 2.50-3.50 ips, Line Size WF9S. Type IV: Sink Rate 4.00-5.00 ips, Line Size WF9S. Type V: Sink Rate 4.50-6.00 ips, Line size WF9S."