... keychains keyring keyholder Materialzinc alloy, or iron, stainless steel, brass, etcSizecustomizelogo print logo or laser, enamel, laer, epoxy ... highly effective visual marketing vehicle for your brand, logo, or organization, and in a cost-effective manner. 3). ... cloisonne color,Back flat or double designAttachment Butterfly clutch or plastic clutch, safety pin, tie bar or tie tack, magnet etc ...