After the inside of the tube is shown to a spectator a white die is placed within. After the proper magical words the die comes out changed into red!
A reversal of the entire procedure happens now taking the white die and placing it inside the tube it is raised to a height of the spectators eyes to see clearly the white die inside.
Another magical word or two and the white die changes to red in an instant just in sight of the spectators eyes. The die is handed to the spectator and the tube is empty!
This is really a clever mechanical outfit from Tenyo and includes a red die and a white die and instructions that are illustrated.