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interactive videos
which can be inspected both before and after the effect
and remember how much joy it was to ride your favorite horse on its happy round and round trip
INGENIOUS SELF-LUBRICATING PISTON
retains them and then releases them all at the same time
Colour Swap - Gravitrax Add-On Size:Ages 8+ interactive videosA 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