N52 25mm x 8mm x 2mm Strong Neodymium block magnets MRO DIY science - 2 MAGNETS
Samarium Cobalt. N52 is the highest grade which is currently widely and reliably available. Neodymium N52 - High Grade. Grade: N52. Neodymium Blocks. Neodymium Disks / Rods. Neodymium Cubes. Neodymium Rings.