Rectangular Neodymium Magnet N35 N42 N52 1.Dimensions: Customized / As Required 2.Materials: Nd-Fe-B N35,N38,N40,N42,N42,N50,N52,N55 (Grade of NdFeB Magnet) 3.Plating/Coating: Nickel,Zinc,Epoxy and etc. 4.Magnetization direction: Through thickness,width or length 5.Max operating temp.: 80-220 degrees celsius It can be very small block/cube,or it can be big block/bar and become a very powerful magnet.They are often used for industrial applications.