... diameter,or else popular metal badge1. MaterialIron, Copper, Zinc alloy , Pewter , Brass , Aluminum, Soft enamel, Tin, Aluminum alloy ... or other Metal material , any material you can choose if ... Antique nickel, etc.4.CraftStamp, Die struck,Hard enamel, Imitation hard enamel, soft enamel, silk printing, offset printing , printing with ...