Metal Pin 1.Material:copper,znic alloy,iron 2.Processing:die-casting, ... and balance before shipment Process Stamped, Zinc alloy injection, Photo-etched, Offset print, Silk screen print, Laser engrave. Plating Nickel, Gold ... , Iron, Brass, Copper, Aluminum, Soft PVC, Stainless iron. Attachment Safety pin, Pin with clutch, Ball chain, Magnet, Ribbon, Dog snap. Packaging Poly ...