A fishing line holder is an essential tool for any angler. It consists of two components: a REEL and a SPOOL. The REEL is a cylindrical device that is used to wind and store the fishing line, while the SPOOL is a flat disc-shaped object that is used to hold the line in place. Together, these two components help to keep the fishing line organized and tangle-free, allowing for a more efficient and enjoyable fishing experience.