ROBOTIME LG503 ROKR Marble Explorer Swing Back Wall Marble Run 3D Wooden Puzzle Kit, LG503

Highlights

Exquisite Marbles Running Puzzle
Marble Explorer is a wooden handcrafted marble run set with a swing back rail wall. The design of this mechanical gears 3D wooden puzzle combines the beauty of science and machines. Build the marble run set and crank the handle, you can watch marbles run crazy down the slopes and twisting turns.

Many Gear Gadgets
It consists of a crane lifter as an elevator, swing-back rails, 2 straight rails, 2 curve rails, and a flip-flop as a switch to drive marbles to 2 paths.

Hobby & Gift
It is good for learning principles of Science, Technology, Engineering, and Mathematics(STEM). 
Precise laser cutting ensures you a fluent building experience. Also a great gift for family and friends.

Specification