The performer displays two small (2.5" by 3.5") old-fashioned chalkboard slates which are blank on both sides. He rubber bands the two slates together and places a small piece of chalk in between them. A spectator now freely chooses a card and when the slates are opened, the name of their selection appears as if it had been written by the spirits.
Each set comes complete with two wooden slates, the necessary gimmicks and chalk.