Incredible Block Penetration

A large square tube, with large cut outs is displayed. Two steel plates are passed through slots in the tube, dividing it into 3 sections. A large 4" die is now dropped into the tube and rests on the upper most plate. On command the die visibly penetrates through the plate to the central compartment, then through the second plate, finally resting at the bottom of the tube. 12" x 4" x 4"