This listing is for 5 pieces. They are not glow-in-the-dark. (Please comment if you would like to add more to the quantity.) Diameter: Approximately 10-10.5mm, Hole: Approximately 1.4mm *Please note that there may be individual differences, such as minor scratches or uneven holes. These beads have holes, so you can create original goods by threading string or thread through them. They are perfect for parts of earrings, bracelets, necklaces, hairpins, and straps♪ I also sell other items such as tonbo-dama (glass beads), ceramic beads, glass beads, hotaru-dama (glow-in-the-dark beads), kanzashi (hairpins), leather cords, bead caps, and accessory parts. ◎If you are purchasing only one item, you are welcome to buy it immediately (*^^*)