Heavy duty Neodymium Fishing Magnet for River The neodymium base pot magnet was made of the neodymium, iron and bonded magnetic alloy blend. It consists of the neodymium magnet and cup shape metal shell. It's made base on the countersunk neodymium magnet, the magnetic of the base pot magnet is stronger than the magnet of the same size. The common plating of the pot magnet will be Ni-Cu-Ni with itâ??s high-quality bright silver shiny corrosion-resistant finish. The fishing magnet is upgraded base on the pot magnet, it mainly uses for rivering metal stuff searching.