... 3.Material: zinc alloy 4.Free sample Promotional blank metal keychains : Material: CufflinkSize:As per client' reuqestedPlating option ... painted, silk screen, offset printing,laser,plating etc.Logo method:offset printing, screen printing, laser engraving, embossed etcOtherMaterial:Copper ... have defferent sizeLogo:Soft enamel, laser engraving, offset printing, etc. Customize logo.can add epoxy or ...