New ✨ Unopened This is a wooden 3D puzzle kit that can enhance intelligence and spatial awareness. - Model Name: Wooden 3D Puzzle - Size: 21cm x 25.5cm x 16.5cm - Target Age: Adults and Children - Features: Intelligence Improvement, Spatial Awareness, Stability - Material: Wood [Applicable Target] This wooden puzzle 3D construction kit is for ages 14 and up, but it's a product that everyone from children to adults can enjoy. Children should always assemble it under the guidance of an adult. The wooden 3D puzzle can be used as a toy after assembly. When you turn the handle, you can witness the gears rotating, and the ball rising and falling, accelerating in a spiral. This 3D puzzle is a brain-training puzzle that can captivate children and adults alike, and it's also an excellent brain-activating tool. It's a scientific construction kit for adults and a useful item for stress relief. It's a suitable item for math and science brain training. [High-Quality and Environmentally Friendly Polywood] The wooden 3D puzzle construction kit, 3D puzzle educational toy for elementary school students, is made of very environmentally friendly materials. Contact with children's skin does not cause allergies. Children can use it with peace of mind. The 3D wood puzzle material is thick and durable. [Wood Puzzle Excellent Quality] Laser cutting is used to cut the puzzle pieces, so the cut surfaces are flat. Therefore, the wooden 3D puzzle can be assembled smoothly and accurately.