Dice Set 30PCS - 6 Sided 16mm 6 Colours Spot Game Dice Set for Smoother Rolling No Harmful Materials Rounded EdgesPerfect for board games, educational games, etc. It will make a difference in your classroom teaching. The dice measure 0. 63 inches (16mm) and are designed with rounded corners for easy rolling. Perfect for doing its job! Package Includes: 30* colors dice (5 each of purple, green, red, blue, white, black) Specification: approx 16 mm Warm note: this item is not intended for use by children 14 and under.