Gravitrax starter set

With the GraviTrax® ball track system, you build your own worlds of ball tracks. With the building elements, you create a fast-paced track on which the balls roll to the finish line. The GraviTrax® ball track system can be made infinitely larger with extensions, guaranteeing limitless building and playing fun! Contents: Instructions, a booklet with construction plans and a booklet with information 4 pcs bottom plates 2 pcs transparent levels 6 pcs marbles Height blocks: 40 pcs large and 12 pcs small 21 pcs curves, 3 pcs crossings, 2 pcs switches, 1 3-in-1 . - Warning. Not suitable for children under 3 years