Super high quality Round NdFeB Magnets 1.Coating:Ni,Zn,NiCuNi,Epoxy,etc 2.Size: ... for many years.We have confidence in providing your high quality products.Features:1. Material:Sintered Neodymium-Iron-Boron ... 30SH-42SH,30UH-40UH and 28EH-35EH;28AH-35AH.4. Shape: Block,Ring,Disc,Cylinder,Rod,Bae, ... diameter, coating and environmental factors.3.Density:7.4~7.65g/cm³,Reversible Temperature coefficient αBr-0 ...