Features: brand new and high quality Made of Acrylic material, square corner design, bright surface polishing treatment, light weight and not easy to break. Multi-Function: You can write numbers or letters on the surface of the cube to make dice for different games. Reusable:These blank white cubes have been smoothed to the point that there is no debris and it is easy to clean. Their surfaces are easily coated, coated or glued, and you can use these acrylic cubes to give full for play to your imagination. Use these dice to increase the interaction between family, teachers and students. You can also draw patterns on the surface, paste accessories, and use them as building block toys, math learning props. Specifications: Material: Acrylic Type Optional: 16mm/18mm/20mm Color: White Size1: approx. 16mm/0.63in Size2: approx. 18mm/0.71in Size3: approx. 20mm/0.79in Package Includes: 10 Pcs x Blank Dice note: Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!