Magnet Block 3mm x 3mm x 2mm N52 Super Strong Rare Earth Neodymium 3x3x2mm
3 x 3 x 2mmN52 Super Strong Rare Earth Magnet Blocks. Magnets are made of a brittle material. These magnets are not as strong as steel. They are more like a brittle ceramic. If you let two magnets slam together, they can crack and break.