Replacement spring line for the Catalina 28, Catalina 30, Capri 30, Catalina 309, Catalina 310 and Catalina 315 with premium double braid line. Both the core and the cover are braided in California from the highest quality American made nylon yarns. This is the strongest and easiest-to-handle line you can buy that stays flexible throughout its service life. Double braid line with a breaking strength at 4,600 lbs. Professionally spliced with a 12" eye in one end.