1、Plastic Material: Uniform blank dice cubes are made of plastic, durable and with smooth surface, no splinters. 2、Package Include: Package comes with 30 pcs round corner blank dice, sufficient quantity for your multiple use. Size is 16 x 16 x 16mm / 0.6 x 0.6 x 0.6inch. 3、Smooth: 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. 4、Mutifunctional: Dices can be used to create personalized alphabet blocks, numbers or puzzles, stamp and make eye catching dice. Great for counting, measuring, learning letters and numbers, can be used as a teaching aid. It can also be used to make a unique dice game. 5、Widely Used: These dices can be used for custom dice making, prototyping game dice, perfect for a wide variety of board game, dice games, math games and educational games, for fun and Christmas party favor, etc.