Ugears Marble Run Tiered Hoist ★Mechanical 3D Puzzle Kit Model Toys Gift Present Birthday Xmas Christmas Kids AdultsModel size: 10. 6*10. 4*10. 6 in (27*26. 5*27 cm) Package size: 14. 9*6. 7*1. 3 in (37. 8*17*3. 4 cm) Number of components: 315 Estimated time for assembly: 5 hours Number of components: 315 Estimated time of assembly: 5 hours Level: Advanced The fun with marble runs continues with Ugears' Marble Run Tiered Hoist, the third in a series of Ugears modular marble runs. This unique entrant in our growing collection of entertaining wooden marble runs