Marble Parkour 3D Wooden Puzzle

Robotime-ROKR Big Funnel Marble Run LG501 is a mechanical gears 3D wooden puzzle based on great human engineering. Its design combines the beauty of science and machines, involving so many small gadgets. Build this Rokr marble run 3D wooden puzzle set and crank the handle, watch marbles run crazy down the slopes and twisting turns. Have fun!

• FUNNEL RAIL: LG501 Marble Parkour is a handcrafted marble run 3D wooden puzzle set with a big funnel rail. Build it with 233 pcs building pieces and 10 marbles.
• MANY GEAR GADGETS: Consists of a wheel lifter, a stair stepper as an elevator, a spiral funnel,2 straight rails, 3 curve rails, a flip-flop as a switch to drive marbles to 2 paths.
• STEM CONCEPTS: Learn principles of Science, Technology, Engineering, and Mathematics(STEM)