1. Size and design can be customized; 2. Material can be iron, zinc, alloy, brass, pewter, alloy; 3. Customer can choose soft enamel, resin, enamel, printing, and epoxy for your design in logo; 4. Different plating finish available, nickel plating, antique nickel plating, cheap gold/gold plating, etc; 5. Attachment: key ring, butterfly clip or pin.