A drinking glass is shown with the top covered by a square of rubber held on with a rubber band. On top of the rubber covering is a coin. The index finger taps on the coin and it visually penetrates right through the rubber and into the glass. There is nothing to be found…it may all be examined freely. This is a visually stunning trick that looks absolutely impossible, but is very simple to do. One of our favorites in the store with almost every demonstration a sale.