Quercetti Skyrail Suspension Basic fantastic marble run suspension tracks and roller coaster building toy.

With Skyrail you can build fantastic marble suspension tracks over 16 feet long. SKYRAIL has been carefully designed to use marbles of different dimensions and materials. SKYRAIL allows your child to make interesting observations, experiments and discoveries in the world of physics, including speed, gravity, strength, centrifuge, attrition, and to intuitively understand fundamental principles of physics. The Skyrail is a safe way to enjoy hours of fun and educational play.