... .40-75mm diamete,els metal pin badge 1. MaterialIron, Copper, Zinc alloy , Pewter , Brass , Aluminum, Soft enamel, Tin, Aluminum alloy ... or other Metal material , any material you can choose if ... nickel, etc. 4.CraftStamp, Die struck,Hard enamel, Imitation hard enamel, soft enamel, silk printing, offset printing , printing with epoxcy ...