Glow Space Coaster
You haven’t lost your marbles. You’re just taking them for a ride. This DIY rollercoaster features awesome twists\ turns\ and a loop-the-loop for death-defying marbles. Marbles whiz along two separate tracks before a motorized elevator transports them back to the starting line. Best of all\ there's no minimum (or maximum) height for this ride."
Flat-packed for build-it-yourself fun. Automatic circulation means that the marbles keep on rolling. Steel marbles included. Dimensions refer to product.