A spectator is given a small black cup to examine. They are then also given a coin to drop into the cup. With a "cling" the coin penetrates the bottom of the cup and lands on the table! The bottom of the cup is shown to be solid, but the penetration may be repeated as many times as you like. The cup can even be handed to a spectator to hold while they drop the coin inside and it still penetrates the bottom!

Comes complete with the special cup, coins and detailed instructions.