Description
- Marble run race is based on great human engineering, they combine the beauty of science and machines, involving so many small gadgets
- Build the set and crank the handle, watch marbles run crazy down the slopes and twisting turns
- Track trapdoors: a handcrafted marble 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
- Intricate system of cogs, gears, and wheels, full of crazy twists and turns
- Stem concepts: learn principles of science, technology, engineering, and mathematics
- Assembled Size: 252X230X165mm
- Package Size: 317X233X46mm
- Wood Pieces: 233 pcs