The extension bridges brings more possibilities and gaming fun in the GraviTrax railway.The extension bridges contains many exciting components for enlarging the ball track. Combined with any GraviTrax starter set, the extension bridges brings even more possibilities and ball fun in the GraviTrax universe. How much longer can the ball roll with the new elements?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 - CORE, PRO and Power. All GraviTrax lines and products can be combined freely. With innumerable expansions with classical components or stones, which enable special ACTION and tricks, the Gra