The Chain Hoist Marble Run is an engineering masterpiece! With 400 pieces and an approximate assembly time of 7 hours, this project will give you a challenge. Don’t worry, it comes with detailed instructions. Once the marble run is assembled, you can crank the handle and send marbles around and around. If you love this model, there are 3 others that can join with this one. Each of the other models are equally as challenging. Imagine the amount of time and effort… and imagine the amazement of your friends as they admire your accomplishment!
