Our GraviTrack Marble Machine Kit is our newest addition to the Marble-Drop mechanism family. Elegant, swooping hands pass marbles to each other to the top of a sweeping multi-level track, available in either solar or battery configuration!
Approximately twice as wide as our spiral Solar or Battery Marble machine kits, the GraviTrack is still desk-top compact but large enough for easy mechanical assembly.
Pre-order yours here: Solar Edition & Battery Edition
Click here for full feature list on Solar Edition GraviTrack
Click here for full feature list on Battery Edition GraviTrack