A small wooden box is displayed along with its loose top and bottom.  There are two holes in the opposite sides of the box through which a length of cord or ribbon is threaded.  The bottom is replaced, and a borrowed wedding band is placed within the box, lid now being replaced.  The spectator holds onto each end of the cord, yet the impossible happens.  The lid and base are removed, and the ring is found threaded on the cord!  This has taken place even though the cord is found to be in one piece and held by the spectator.  Box and cord may be examined.