The Impossible Balancer is precision machined from a solid block of aluminium. Pick it up by its 'stalk' & spin it with your thumb & fingers. The Impossible Balancer will start tipping to one side & will eventually reach a point where it flips the other way up & starts spinning on its stalk! If you spin the Impossible Balancer on a very polished surface, i.e a mirror, it will continued to spin for minutes. Listen for the sound changing as it flips onto its end!