Challenge yourself by building this marble run 3D wooden puzzle set, and watch the marbles climbing to the top again and again!The marble run marble climber is based on great human engineering. This 3D wooden puzzle combines 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 over and over again on this marvellous wooden marble run puzzle. Features: • 233 Pieces • Ages 14+ • 4-5 Hour Build Time • Dimensions: 252(H) x 227(L) x 203(W)mm
