Get ready for Rolling Liftarm, the latest LEGO Great Ball Contraption from the GBC4ALL series.

This stunning LEGO GBC module features a long orange liftarm moving up and down along its slides onto a gear rack, grabbing balls and bringing them to new highs.

The complex gearing and the smart ball feeding mechanism from this amazing ball machine are not only cool to watch, but they are also perfect for you or your kids to learn about mechanical concepts.

Like any other module from the GBC4ALL series, this machine can be chained with others to form an awesome marble circuit, that you can easily motorize.

Thanks to a pivoting exit ramp, you can even decide how the GBC balls continue their race.

Made with only standard LEGO Technic parts, you can easily reproduce this beautiful pocket machine thanks to ready-to-build LEGO kits (including only genuine LEGO bricks and balls) available on BuildaMOC.

Fun is just waiting for you!


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Discover also the rest of the GBC4ALL series.
We can bet you will love them !