You borrow a wedding ring from a spectator. A piece of rope is drawn through the ring, which you place in your hand. The spectator ties a knot, securing the ring inside your fist. Next you present a beautiful, shining Wedding Bell in brass. The spectator is told to ring the bell. It has a wonderful sound.

In some countries the priest is ringing the Wedding Bell three times during the ceremony. The third time the groom is supposed to give the ring to his bride.
During the third ringing you open your fist, only to find that the wedding ring has vanished!

You ask the spectator to look inside the Wedding Bell. THERE IS THE SPECTATORS RING!
As a matter of fact THE CLAPPER THAT MADE THE BEAUTIFUL SOUND TURNS OUT TO BE THE RING!! Comes with everything you need: The Wedding Bell, the rope and instructions.