These blocks have been smoothed down to the point of having no splinters. Their surfaces are easy to draw on, paint, or put glue on. They are perfectly safe for craft-making session in the classroom 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 colors to make eye-catching building blocks. Perfect for counting, measuring, learning letters and numbers, can be as teaching aids. It can also be used to make a unique dice game. These dices can be used for custom dice making, prototyping game dice, perfect for a wide of board game, dice games, math games and educational games, for fun and Christmas party favor, etc. size:16mm Material:acrylic colour:White Package Contents: 48 x dice Only the above package content, other products are not included. Note: Light reflection 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.