cylinder NdFeB magnet 1.material: NdFeB 2..grade n38 3.coating:Gold 4.meet:ISO9001:2000 , CTI Test cylinder NdFeB magnet Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron and some other transitive metallic elements to make it strong General Features Grades:N33,N35,N38,N40,N42,N45,N48,N50,N52, (M, H, SH, EH, UH )Coatings: Ni, Ni-Cu-Ni, Zn, white-blue Zn, Epoxy, Gold, and etc.Sizes: according ...