This is marble run set that will definitely surprise you. Build this 3D wooden puzzle with your hands and watch the marbles run smoothly through those trapdoors. All mechanical-driven, with no battery needed.
WATERWHEEL COASTER – Gorgeous, excellent product. Build your own working roller coaster model made of natural wood! The coaster is full of dips and turns with some engineering and physics are thrown–so once you build your coaster, you can run marbles through it!
TRACK TRAPDOORS: A handcrafted marble run set with a whole back of trapdoor track. Build it with 233 building pieces and 10 marbles.
MANY GEAR GADGETS: Consists of a wheel lifter, a stair stepper, 4 straight rails, trapdoors, and a block track. An intricate system of cogs, gears, and wheels, full of crazy twists and turns.
STEM CONCEPTS: Learn principles of Science, Technology, Engineering, and Mathematics(STEM)
HOBBY & GIFT: Precise laser cutting ensure you a fluent building experience. Also a great gift for family and friends.
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