Dowonsol 20 1-Inch Small Glass Bottles Message Treasure Charm Pendant DIY Kit for Necklace Weddings Wish Jewelry Mini Glass Bottles with Corks Color: Clear, Material: Pyrex, High clear glass, cork lid Bottle Size:1 inch bottles (1-1/4 inch with cork topper); Bottle Diameter(Inside): 3 mm; Bottle opening is 3mm across (1/8") 20pcs glass bottle with 20 cork toppers with cork screws already attached for easy use. Perfect for art/craft project Necklace Weddings Wish Jewelry or party favors Eye screws Already Attached for hanging your creation charm or pendant. Not intended for children.