Gather 'round! Expansion Set 9 includes a 50cm / 20-inch-diameter, round wooden rail with 6 evenly-spaced, drop holes and lots of design possibilities! Compatible with all Quadrilla Marble Run sets.

Age 4+

About Quadrilla
Roll, twist, plunk and swirl your way through each of the Quadrilla Marble Runs. Hours of developmental play possibilities, because the award-winning Quadrilla building sets feature an incredibly clever design and virtually indestructible wooden construction.

Kids will stretch their creativity and build up their logical thinking and deductive reasoning muscles as they begin to understand how the parts are put together determines the marbles' path and momentum.

Part of the fun of playing with Quadrilla marble runs is the fact that you can see the marbles on their paths all the time. You can also stop them or change their directions. Quadrilla marble runs open endless possibilities to learn about the 3 dimensions and to think in 3D! From very simple to highly complex – only your and your child's imagination and creativity set the limits to what you can create with Quadrilla.

Each Core Set offers something new that will surely stimulate the budding builder. Enjoy even more excitement with the Extension, Expansion and Fun Sets that continue to add on the fun as you enhance each Core Set. Lovingly designed in Germany.