... 3.Zn,Ni coated 4.Do as the drawings speaker disc magnetsProduct Image1.Material: neodymium magnet2.Grade: N35-N52, ... N40UH, N28EH-N38EH3.Shapes and sizes: Various such as block, disc, cylinder, ring, ball, arc, segment, can custom magnet as ... , Rotors, Wind turbines/wind generators, Loudspeakers, Magnetic hooks & holder, Filters, Automobiles, etc.6.Packaging : Standard Export packing,air packing ,sea ...