This visual trick is as visual as it is baffling!
Cover the dice with a small tube, yet when you lift off the tube, the number of dice grows and grows until you have double the number you started with.
A surprising gimmick that is built into the tube makes this startling effect possible.
At the end of the performance, you can hand out the tube and the dice for thorough examination.
The box is opened but in near new condition.