eCrafty EC-4911 Mini Glass Bottles Message Charm Kit with Weddings Wish Jewelry, 3/4-Inch Makes 10 mini bottle charms 18mm or 3/4" tall 1" tall with cork Plus 10 eye screws for converting to charms Bottle Diameter(Inside): 3 mm Bottle opening is 3mm across (1/8") Use very small items (under 3mm or 1/8" wide) to fit inside these bottles Our handy kit includes 10 eye screws - just screw into cork tops for instant charms & pendants