Oil painting soft enamel pin. Similar to hard enamel, each color is separated by metal lines. Soft Enamel colors are recessed,giving your pins a tactile feel. Product name Custom oil painting 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.