Gecko Run Marble Run Starter Set blues the model comes with two

the model comes with two interchangeable extra-modules - the Shuttle and the Sputnik a" which connect to the main module via the planetary gearing and rotate almost twice as fast as the globe and make almost two full spins in one pull of a winding lever

This 1000 piece puzzle features a collection of unusual and intriguing items

This boxes set features 21 3D images and a reel storage case

then wind them up and watch them go

Gecko Run Marble Run Starter Set blues the model comes with twoMove over boring marble runs, there's a new kit in town! Witness physics in action with this innovative, flexible system of tracks. Thanks to nano pads (safe little strong suction cups), any vertical surface has the ability to become a marble run. Future engineers create hills and jumps, setting up trick shots and learning through trial and error. We love that it's intuitive, mess free, open ended, and educational. Includes 12 tracks, 27 adapters, 40