UGEARS Marble Run Spiral Hoist Fourth Wood Track 3D Puzzle Model Kit with Colored Glass Marbles Puzzles for Adults and Kids Self Assembly Creative Gift Wooden Kits

Dual-Rail Hoist System: Experience 3D puzzle marble lifting with main spiral rails plus vertical rails, featuring hand-crank operation that elevates one marble per nine revolutions to storage Three Exciting Descent Elements: Watch marbles navigate thrilling obstacles including high-speed slide, vertical snake pathway and mountain river course in wooden models to build adults craft kit Modular Marble Run Collection: Connect with Chain Hoist, Stepped Hoist or Tiered Hoist models using included special connectors to create giant marble amusement 3D puzzles adult model kit park Challenging 6-Hour Advanced Assembly Project: Master wooden puzzle model building 266-piece construction featuring precision laser-cut plywood components and detailed mechanisms for routing control Perfect Wooden Gift: Ideal 3-D puzzles present for mechanical puzzle lovers, STEM education fans, marble run collectors for Birthday, Christmas or Fathers Day; great as hobbies for adults women and men, Manufacturer: UGEARS