Effect: A toothpick is pushed straight through the center of an ordinary box of matches with ease, but when the spectaitor tries to push the tooth pick thru they can not  becuse To his amazement, the box is completely filled with a solid block of brass.
 
Absolutely everything may now be examined and the spectator will have no clue as to how the penetration occurred. Nothing added or taken away. No switches. Absolutely no sleight of hand whatsoever. The ingenious hidden mechanism does most of the work for you. Precision engineering at its very best.
 
Comes with a matchbox, a brass block and video instruction.  Makes for a great bar bet