Invisible Middle......$3.00

A very puzzling and entertaining trick!  Five pieces of colored cardboard
are used
to construct a perfect square shape but the audience only see
four pieces.  The performer says the fifth piece is invisible as the square
is reassembled only to find there is a hole in the center!  The fifth piece is
removed from the performer's pocket and fits the hole perfectly!  This is a
really easy and fun trick to perform!