These blocks have been smoothed to eliminate splinters. The surfaces are easy to draw on, paint, or glue. They are completely safe for classroom craft sessions for teachers and students or simply as keepsakes for special occasions. These acrylic cubes can be used to make personalized alphabet blocks, numbers or puzzle blocks, to mount stamps or simply paint them with different colors to make eye-catching building blocks. Perfect for counting, measuring, learning letters and numbers, and can be used as teaching aids. It can also be used to make a unique dice game. These dice can be used to manufacture dice, create prototypes of game dice, perfect for a variety of board games, dice games, math games and educational games, for fun and Christmas parties, etc. Size: 16mm Material: acrylic Color: White Package Contents: 48 x dice Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.