Watch the marbles speeding down through the spectacular aerial tracks of this Quercetti's construction toy. Learn basics of physics of forces and motion. Have hours of building and experimenting fun! Skyrail roller coasters by the Italian award winning toy maker, Quercetti, are the only marble runs reproducing the mastermind technology of suspension bridges. The Skyrail Suspension Rollercoaster with Motorized Elevator is a high quality construction set with vortex chamber, motorized elevator, and more than 15 feet of aerial tracks to turn marble race into an educational entertainment. 200 pieces of this rollercoaster set feature special double entrance large funnel, 2 unique spiral tracks, 4 rounded bases improving sturdiness, extra long bridges allowing young and adult builders to assemble larger structures. You can use the design ideas from the illustrated instruction book, or create your own structures using your engineering and building skills. When your engineering masterwork is ready, you can spin and wind the marbles down the tracks. High quality real marbles are included in the Skyrail Suspension Rollercoaster with Motorized Elevator from Educational Toys Planet. The marble run construction can be put together on the floor or on the table top. Elevator requires 2 AA batteries (not included).