For instance, you would match an Ultra 4 5-weight fly line with a 5-weight fly rod, and you'd spool it on a 4/5/6 fly reel.
Lower numbers & ndash weights 2-6 & ndash denote smaller gear best suited to trout and panfish. As the numbers rise, so does the gear's ability to cast larger flies for bigger game fish. Weights from 11-15, for instance, are built for big tarpon, billfish, and other large saltwater species.