The GraviTrax PRO element turntable provides a mechanical turntable to rotate the matching balls. More control over the paths of the ball! With PRO Turntable, matching balls can rotate a mechanical turntable. By rolling down a ball through the stone, it changes its direction and at the same time changes the turntable. This allows for more variation of the path as well as control over the paths of the ball. Combined with any GraviTrax starter set, the GraviTrax PRO element turntable brings even more variety and ball fun into the GraviTrax universe.GraviTrax is a flexible, interactive ball track system for children aged 8 and over: With GraviTrax, children, young people and adults are not only building simple ball tracks. You create unique ball track worlds. By freely designing the ball tracks and exploring the rolling behavior of the balls, the understanding of science is strengthened and gravity can be experienced at first hand. The GraviTrax Universum contains three exciting lines - C