... low price 4. good performance Rare earth magnet ballShape: Arc(segment), Block, Cube, Cylinder, Disc, Ring, Rod, SphereMaterial grade or magnetic propertes ... , N30AH, N33AHCoating: Zn, Ni, NiCuNi, Au, PassivationWe are professional factory produce Magnet, NdFeB Magnet, permanent magnets, motor magnet, rare earth magnets, Neodymium magnet,magnetWe also produce ...