Our custom hard enamel pins has smooth polished texture and Jewelry-like finish. This style can displays sharp and vibrant contrast in colors, it works with any logo/design. Product name OEM One Piece Ace 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.