The 5 pieces that include this set produce exciting action with marbles including an entire 360 degree circle and 2 Y splitters that alternate the direction of marbles. Expand the joys of your existing marble run toy by adding these pieces!
5 of our most well liked see-through marble run pieces permit you to see the entire action.
2 – Y splitters alternate moving the marbles in two different directions (that is considered one of our such a lot requested pieces).
Same old toy size marbles (5/8 inch or smaller) work with this set (no marbles included with this set).
Compatible with Marbulous Marble Run Toys including our Marble Genius Marble Run Starter Set (60 pc.), Super Set (85 pc.), Extreme Set (125 pc.), & 8 Accessory Sets.