Gravitrax PRO Extension Vertical with a nod to Isaac

with a nod to Isaac Newton

This fun and fascinating wooden marble run features an ingenious 3-stepped alternating lift mechanism and a set of new features to hold your attention as you watch the marbles make their cyclical journey

this tray is a modern and elegant size

what could be better than a getaway to a warm

marshmallows

Gravitrax PRO Extension Vertical with a nod to IsaacTake your marble run higher and higher with the GraviTrax PRO Expansion set! Vertical effects for your track! What makes a great toy? GraviTrax checks all the boxes! Its a creative, modular, expandable track system that challenges children to use their imagination to design and build their own marble runs! Electronic free, GraviTrax construction sets use STEM friendly concepts while building critical thinking and problem solving skills. Completely