Colour Swap - Gravitrax Add-On Size:Ages 8+ retains them and then releases

retains them and then releases them all at the same time

South America

DIY model kits

interactive videos

Colour Swap - Gravitrax Add-On Size:Ages 8+ retains them and then releasesA clever tunnel shaped action block that gives the illusion of changing the color of a marble. By a clever sleight of hand, the ball goes inside the block and comes out in another color. An easy to master magic trick that is sure to have a spectacular effect in a GraviTrax marble run! Infinitely Modular And Compatible with all GraviTrax products. This action block is played with at least one Starter Set (essential to get started) and then combines