4 Kinds Marble Race Run 3D Wooden Puzzle Mechanical Kit Stem Science Physics Toy Maze Ball Assembly Model Building For Kids

SPECIFICATIONSBrand Name: Hedin CraftRecommend Age: 12+yOrigin: Mainland ChinaMaterial: WoodGender: UnisexPuzzle Style: 3D PUZZLECertification: CEStyle: Geometric Shape Marble Run Kit [HIGH QUALITY] – made of natural birch ply. Materials are recyclable and safe. No glue. [DIY EXPERIENCE] - building model kit will stimulate your child’s ability to plan and build their own structure like a true engineer. [EASY SELF-ASSEMBLY] - our marble run kit is accessible for kids and adults[BEST GIFT] –marble run kit will be a worthy addition to your kid's collection. FAQ 1. Do I need to cut parts out of the boards?No, details are already pre-cut and you should just press them out of the board. They are connected with small crosspieces. If you have some difficulties to remove a detail, just cut a crossbar with a knife.2. Is it possible to paint the model?Yes, you can paint it. We recommend to use watercolor. You can use acrylic paints, but a thick layer can interfere with gears working.