... sample time 4.size:40-75mm diameter,or else popular metal badge 1. MaterialIron, Copper, Zinc alloy , Pewter , Brass , Aluminum ... , Soft enamel, Tin, Aluminum alloy or other Metal material , any material you can choose if you need. 2 ... , Antique nickel, etc. 4.CraftStamp, Die struck,Hard enamel, Imitation hard enamel, soft enamel, silk printing, offset printing , printing ...