e performer leans a block of wood (previously and totally examined) against a bottle (also completely examined) and tells everyone to concentrate on it. Suddenly the block starts leaning up and away from the bottle and falls flat on the table with a loud clack (especially if the audience is really really quietand they usually are). By this time the audience isnt sure if they just witnessed this or not, as most of the time they are still completely silent and in awe. An amazing apparent demonstration in telekinesis or psychokinesis (PK). No magnets, no string, no wire, no sand, no wind, no stooges, no remote controls, entirely self-contained, works by itself. All can be totally examined before and after the demonstration. Dont be fooled by the cheap ones on the market today where sand runs through the block, and you can hear it from a mile away. This one doesnt work like that. Its a completely different method that makes no noise whatsoever. Block measures approx. 1.5 x 1.5 x 8