... Steel, othersColor3 colors(no more charge) or more(need add charge print)Dimensions80*50mm,or to be customized.Thickness0.3, 0.36 ... , 0.5mm, etc.PrintOffset or Silk printingSpecial craftsHologram, Magnetic stripe or on your demandSurfaceMatte, GlossyPlatingGold, Silver, othersCraftsEtch, Engrave ...