UGEARS Steam Express 2.5D Puzzle Mechanical Model Wooden DIY Kits3D Marvel in its Frame: Meet the Steam Express from our Classic Vehicles Collection, a new line of UGEARS 2. 5D mechanical puzzles and model building kits. Our fascinating train model has movable elements and comes in its own frame suitable for hanging on a wall or decorating a desktop or shelf Realistic miniature: This vintage model steam train depicts a classic steam locomotive and passenger carriage. Our 2. 5D Steam Express puzzle is rich in