Mag Dev-Sintered-Neodymium-Iron-Boron-N35H-Permanent-Block-Magnets-Mag Dev-BLNI00680-N-p-A-20-x-10-x-5mm-permanent-block-magnet-made-from-N35H-grade-sintered-Neodymium-Iron-Boron-Nd Fe B-This-type-of-magnet-material-gives-the-highest-energy-per-unit-volume-of-any-permanent-magnet-material-being-capable-of-lifting-up-to-1000-times-its-own-weight-Suitable-applications-for-this-disc-magnet-include-audio-aerospace-automotive-medical-&-renewable-energy-p-Mag Dev-BLNI00680-N-Neodymium-Iron