N52 20mm x 4mm x 2mm Neodymium block magnets - slot car DIY MRO - PACK OF 10
Samarium Cobalt. N52 is the highest grade which is currently widely and reliably avaialbe. Neodymium N52 - High Grade. Grade: N52. Neodymium Blocks. Neodymium Disks / Rods. Neodymium Cubes. Neodymium Rings.