It is a tool with a simple structure in which a neodymium magnet with a strong magnetic force is covered with silicon.You can attach iron hooks, flies, fishing hooks, etc. to the lure, making it easy to replace the lure and fly.Temporary placement of Forceps and ring openers, arrangement of assist hooks, and other usage are free.Since the magnet is completely covered with silicon, you can use it with confidence even when fishing in the sea. Keep away from precision machinery and cards.