AOMAG N45 Block Neodymium Magnets 1.53" x 1.53" x 0.75" 100% Brand New By AOMAG. (http://www.aomagnet.com) Top Quality Neodymium Iron Boron (NDFeB) Rare Ear Super strong and powerful magnet, much stronger than ceramic magnets! Pull Force: 28Kg, Great performance! 39mm x 39mm x 19mm (Tolerance=+/-0.3mm), magnetized through thickness, poles on the flat surfaces Neodymium magnets are brittle; they can be broken or can splinter in a collision. One should wear gloves and protective glasses when handling these magnets, because splinters could disengage and fly from the magnets.You should avoid having constant contact with magnets of any size and keep a distance of at least 3 feet to large magnets. Quantity: 1 Block Industrial Lifting Rare Earth Magnets N48 per Package .