AOMAG Neodymium Hook Magnets Strong Neodymium Eyebolt Circular Rings Magnet - Holds up to 30 Pounds 100% Brand New En AOMAG. (http://www.aomagnet.com) Top Quality nodyme-fer-bore (NdFeB) Rare Earth Super strong and powerful magnet, much stronger than ceramic magnets! Material: Neodymium (NdFeB) magnets. Grade N52 is the highest grade (the most powerful magnet) that human tec. can reach so far. Quantity: 1 magnet Hook per package