The magician shows a die and a small plastic tube. They both have a hole which goes through them from side to side. A spectator puts the die inside the tube, lining up the holes; then he passes a metal bar through the holes of the tube, blocking the die inside. Now, with a magic gesture, the performer makes the die penetrate the bar and come out of the tube, dropping on the table.
It can be immediately repeated.
Totally automatic. No skill required.
Pocket-size, take it anywhere you go.
The tube is cm 7,5 x 2,5 x 2,5 (in. 3 x 1 x 1). The die is cm 2 x 2.