Neodymium Magnet Rectangle N42 Ni-Cu-Ni Coating 2x1x1/2inch Wind Turbine Neodymium ... ) is made from Neodymium,Iron,Boron and some other transitive metallic elements to make it strong. General Features: Grades:N33,N35 ... etc.Sizes: according to your requirementsShapes: disc, cylinder, sphere, block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11,000 ...