Abstract: Methods, apparatus, and products for a detachable line cartridge system. A detachable line cartridge system has a spool base and a detachable flange assembly having an aperture and a locking mechanism that engages with the spool base, wherein the flange assembly is configured to secure a line cartridge to the spool base.

Abstract: Methods and apparatus implementing a quick-change spool system. A quick-change spool system includes one or more spools, each spool including a cavity in which there are one or more recesses. The system includes a spool base configured for detachably coupling with a spool support shaft of a fishing reel body, the spool base including a member configured for mating with the cavity of one of the spools. The system includes a retaining mechanism that includes one or more spring-loaded keys that are shaped such that the keys depress when the member of the spool base is being inserted into the cavity of one of the spools and, furthermore, extend to engage the recesses when the member of the spool is fully inserted into the cavity.