material: zinc alloy.brass,silver,gold plated. process:die struck .Laser.Hand Enamel.Engraved etc injection:soft enamel size ... cufflink Materialzinc alloy,brass,iron,stainless iron,aluminum etcProcessDie struck, Die cast, Stamped, Photo Etched, Soft enamel, Cloisonne, Imitation Cloisonne, offset ... design for you as well. 3D silver metal lapel pin,die casting pin badge,collar pin for tie