About This

• wood
• Imported
• Solar model kit for Adults: Build your own marble run by battery or solar, Connect wire of motor with solar panel if will use this 3D puzzle under sunlight;Connect wire of motor with battery case if you are indoor. Requires 2 AA batteries (batteries is not included in the package), The wooden craft kit helps you understand the crafting process of wooden structure assembly
• Wooden mechanical puzzles :Fun 3D wood puzzle set is designed to teach your hands on skills like coordination, physics,.Our DIY Model kits are suit for adults who love challenge .It may take several hours to make a puzzle model kit, but there are assembly instructions, which will make you become a creative little construction engineer
• High Quality:Projects Science Experiments makes by premium basswood plywood. Non-toxic,No burr, marble track made safe from laser precision cutting.Perfect 3D wooden building Toys for adults,In your spare time, you can assemble it to relieve work stress
• Perfect Craft gift :Jigsaw Puzzle is a great gift for a birthday chrismas thinksgiving day Father's Day ,They are not only toys, but also craft art, which can be placed at home/office as decorations. You can give it to your husband couple wife friend father，This 3D puzzle is for adult age14+ years old.
• After Sales Service: 3-D wooden toys are designed to make you more imaginative and creative. Your safety and your satisfaction are our pursuit. For this toy, If the product does not meet your expectations, please feel free to send us a message via "Contact Seller", we will handle it for you