This wooden 3D model kit makes by premium basswood plywood. friendly, with precise and clean Laser-Cutting technology it has a edge with no , safe to play.Connect wire of motor with solar panel if you are going to use it under sunlight.Solar power panel collects solar heat energy into an electric energy drive motor.After assembly, the steel ball can be rolled along the . These are real-life mechanisms. We believe that these beautiful working models should be . 3D wooden puzzle run set help children enjoy a journey of exploring woodcraft construction.With laser-cut technology, the -cut wooden board will be easy to pop-the individual pieces out of the sheets. Utilizing safe and environmentally friendly wood from all-natural trees without any added toxins, even children can safely play with sets. Also, the educational toy comes packaged with clear, simple and detailed English instruction as as illustrations. You will the wooden art craft set quickly and correctly.Exercise thinking , hands-on and concentration. Enjoy details and a DIY experience. Creating the wooden puzzle model kit is challenging and may take 1-2 hours, depending on your and patience.Colour: wood colorMaterial: woodenSize: finished size 15.5x12.5x15cmPackage Contents:1 set * DIY Puzzle Model Kit1 * Chinese and English instructionsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.