Check the listing for details. UGears Marble Run 2 Stepped Hoist Model Kit. Condition: New. Listed at 71.98 USD. UGears Marble Run 2 Stepped Hoist Model Kit, 181572, Three tracks each with unique elements and the marble accumulator sends all three marbles along their divergent paths, Modular design for connection with other UGears marble runs of the same or different design, Finished Model Size: 11.6" x 10.6" x 10.8", Number of Parts: 355, Level: Advanced, Assembly Time: 8 hours, Recommended Age: 14+, Marble Runs are fascinating marvels of art and engineering that will captivate your attention. The only thing better than watching one is building it yourself. The Stepped Hoist is the second in a series of UGears modular Marble Run kits and is both a beautiful kinetic sculpture and an intricate toy that teaches as it entertains. It features an ingenious 3-stepped alternating lift mechanism that sends.