Cardboard Display Cards, Used For Necklace and Earring, BurlyWoodSize: about 6cm wide, 9cm long.âDisplay cards: approx 9 cm x 6 cm(3.5 x 2.4 inch), made of Kraft paper. âEach display card has two holes and two card slots . they can be used simultaneously, another hole in the top of each card convenient for hanging. They are perfect for your jewelry craft to show. âThese blank display cards are without any pattern so that you can design belong with your styleâs logo or information on them. âApply to earrings, necklaces, brooch or other jewelry craft. It is really suitable for boutique, jewellery shop to display their product.