Tonbo-dama are glass beads with colored patterns, and they have holes for stringing. You can make necklaces, brooches, and Japanese ornaments with them. Tonbo-dama are protective amulets. Round bead: approximately 24mm, center hole: approximately 6mm. Great value! Tonbo-dama are handmade, so the patterns, colors, and sizes may vary slightly. Please understand. Those who are overly concerned about minor imperfections should refrain from purchasing.