Free spinning and balancing toy letting you discover the physics of an offset center of gravity! Two models included: The heavyweight champion! The face of anxiety! No supports and no glue needed, small notches locks the weights to the bar. Place the items and print them shown in the picture. The weights must be printed with at least 90% infill, the rest of the items with 20% infill. The heavyweight champion and the face of anxiety are printed in two halfs and are when finished hold together by the locking weights. The heavyweight champion comes with a mirrored part. The toy can even be balanced on your fingertip. The pointy tip can when assembled need a little bit of sharpening with a knife for a lower friction when rotated.