... 4.Coating:NiCuNi,Zn,etc. neodymium disc magnet Product Image Descriptionneodymium disc magnet1.Material:rare earth ,Neodymium -Iron-Boron2.Shape:Tile,Ring,Disc,Round ... N35-N52,N30M-N48M,N35SH-N45SH,etc.5.Coating :NiCuNi, Ni,Zn,Gold,Silver,Epoxy,chemical plating Ni,etc.6 ... , Magnetic hooks & holder, Filters, Automobiles, Jewelry.Box,etc. Neodymium magnet advantages a) High energy b) Very high Hc and Hci ...