... stable Performance 2) Reasonable price 3) Perfect Consistence 1) Material: Sintered NdFeB Magnets;2) Grade:N33-N52 33M-50M, ... ,30SH-45SH,30UH-38UH and 30EH-35EH;3) Shape: ring,block,disc,bar and so on;4) Size: according to customers ... , magnetic hooks, magnetic holder, filters automobiles and so on; magnets block with passivation