hard enamel badge, 1.Material is zinc-alloy 2.Size:any design is available 3.Design:You can use your own design... hard enamel ... badge,1) Material:brass,iron,zinc-alloy,silver,gold and so ... on .5) Color Reference : (Pantone Color Chart) -- With soft enamel , hard enamel / cloisonne ,pad or screen printing , by paper sticker or ...