Strong NdFeB Magnet Raw materailSintered Neodymium-Iron-Boron (NdFeB)GradeN35-N52, N35M-N48M, N35H-N45H, N33SH-N42SH, N30UH-N40UH, N30EH-N35EH.Magnet ShapesDisc, Rod, cylinder, Cube, Block, Ball, Ring, Countersunk, Segment, Trapezoid, Irregular, etc.CoatingNi-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chrome,..