Solar 3D Wooden Puzzle Marble Run DIY Model Kit Craft Sets Educational Wood Mechanical Building Toys STEM Science Experiments Projects Birthday Gift for Adult Men Kids Age 8 10 12 14＋

[Solar model kit : 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)Wooden STEM toy is pure entertainment meets learning. The wooden craft kit brings adults back to childhood and helps kids understand the crafting process of wooden structure assembly "Educational wooden mechanical puzzles :Fun 3D wood puzzle set is designed to teach children hands on skills like coordination physics STEM principles .they are suit for kids of all ages from 8 up to teens.Our DIY Model kits are also suit for adults who love challenge .It may take several hours to make a puzzle model kit but there are assembly instructions which will improve the childs independent learning ability and become a creative little construction engineer" High Quality:STEM Projects Science Experiments makes by premium basswood plywood. Non-toxicNo burr marble track made safe from laser precision cutting.Perfect 3D wooden building Toys for kids age 8 9 10 11 12 13 14 15+ "Perfect Craft gift :Our Jigsaw Puzzle is a great gift for a birthday chrismas thinksgiving day Fathers 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 children husband couple wife friend kids boys girls father" After Sales Service: 3-D wooden educational toys are designed to make children smarter more imaginative and creative. Your child\s 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]