1.Grade: N33, N35, N38, N40, N42, N48, N50, N52 (M, H, SH, EH, UH,AH) 2.Shape: Disc, Cylinder, Block, Ring, Countersunk, Segment, Trapezoid, Irregular shapes and more. Customized Design (Design proper magnets for clients specific requirements) 3.Coating: Ni-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chemical, PTFE, Parylene, Everlube, Passivation and more.