High-quality wood board, Laser precision cutting. The whole set is extremely well designed, with very tight tolerances and good machining. It's an educational toy set which is great for kids training their hand-on skills and creativity.
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!