Hard enamel is also known as Cloisonne. These jewelry-quality pins are durable and highly refined, and still affordably priced! Hard enamel pins are treasured with a high perceived value. Product name Custom anime hard enamel pins Material Zinc alloy / Stainless Steel / Iron Design 2D/3D, Custom shape+logo Technology Soft enamel , Hard enamel ,Die Struck Ect Shipping FedEx / DHL / UPS / TNT etc.