shape:round,square,and as your design carft:die casting,polishing,coating,painting,epoxy OEM is ok ... meet your requirement with high quality and demand.Material:Die Cast,Die Struck,Stamped,Photo Etching;Plating:Gold,Antique Gold,Matte ... palting are available;Logo Style: Cloisonnehard Enamel), Soft Enamel, Die Struck Enamel, Die Cast Enamel, Silkscreen Printing, Offset Printing, Engraved, Embossed, ...