Quercetti Skyrail Suspension Marble Run
Let your imagination take hold as you build your very own roller coaster. This 310-piece set allows you to build 33 feet of track with rails that are suspended in mid-air and attached with a series of ties and anchors. Perfect for demonstrating gravity, speed, inertia, weight and other principles of mechanics and physics. Adults and children will love watching the marbles race down and around. Comes with a detailed instruction booklet
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