VERY STRONG Small Mini Neodymium Square Blocks Cube Magnets 5mm x 5mm x 2mm
N numbers range from N27 - N52. Very Strong Mini 5mm x 5mm X 2mm Square N35 Neodymium Magnets. Neodymium is about as common as tin or lead. Neodymium Magnets. Never allow magnets to jump together or to jump to steel as they will likely shatter.