... we also called silver and golden card,we also can print other colors ,shuch as red, green, white ... , yellow ,blue and so on ,and we can thermal printing it too .Material : BrassSize : 85.5mm*54mmThickness ... : 0.35mm/0.5mm we can according to your requirments are availableOther crafts: serial number , ... / box, 25 box / carton delivery 15 days High quality metal card