... is the third generation of the rare-earth permanent magnets,Sintered Ndfeb is the strongest permanent magnets in the world up to ... ,M,H,SH,UH,EH)Various sizesCustomizedShapeBar, Strip, Stick, Block, Sheet, Round, Disc, etc.MaterialsSintered Neodymium-Iron-BoronCoatingNi,Zn ... Min:diameter 1.5mm*0.5mm thicknessDiscneodymium magnetN35, N38, N40, N42, N45, N48, N50, N52(Max. Operational temperature: 80c) ...