●Size: Diameter 0.5 inches (12.5 mm); Material: Glass; Made in Japan ●Japanese Glass Marbles Value Pack ●Suitable for hobbies, interior decor, kids play, etc ●Available in a wide variety of sizes 8mm/10mm/11mm/12.5mm/15mm/17mm/20mm/25mm/30mm ●Available in a variety of clear colors, matte colors, fluorescent colors, and patterns. Find your desired size and pattern