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 printed.Platinggold,antique gold,,silver,antique silver,bronze,antique bronze,copper,antique copper, ...