3D Puzzles Toy for Adult - Mechanical Sling Model Kit - Brain Teaser Games Stunning Gifts for Adults and Teens（Manual Operation）

Fun toys, creative mechanical stone throwing tracks,set of science/technology/engineering knowledge. Creative mechanical stone casting track, combining science/technology/engineering knowledge to stimulate the collision of steel balls and tracks. Product Information Theme：Mechanical sling Color: As pictured Material: Basswood Difficulty:Two stars Number of parts：81Pcs Approximate assembly time:1h+ Finished puzzle size:130*160*85mm Appliation: Over 7 years old. Please note:-Keep the puzzles dry.do not expose to the sun.-do not soak; otherwise it will be seriously deformed.-This product is made of wood. Be careful when assembling as it can break easily. Package list : Mechanical sling 3D Wooden Model Puzzles Kit*1（The model kit comes with all accessories and a Detailed illustrated instructions instruction book.）

Material and Craftsmanship - This 3D puzzle is made of layers of natural basswood, which is made of high-quality plywood by precision laser cutting, and can be perfectly assembled without glue, it is very suitable for children and adults to build.

Assembly Tips - Non-toxic and natural plywood sheets,and necessary spare parts in case. Just be patient and after 1 hours you will make this 3d wooden puzzle for adults.

Multiple Ways to Play - This wood mechanical model kits for adults will bring you highly satisfying and educational user experience.Rotate the crank, The steel marble will follow an S-shaped suspended orbit to achieve gravitational fall. Every accidental or doomed choice of path will create dozens of fun to watch.

STEM Project & Nice Gifts - Focused on the assembly of this wooden 3D wooden puzzle-model building kit is favorable to learn the fundamentals of engineering, improve kids' hand-eye coordination.This 3D puzzle model kit becomes one well-received gift choice no matter for adults, also teens, boys, girls, let alone puzzle enthusiasts.

After-Sale Service - Everything you need is in the package, If there is any problem, please feel free to contact us and we will provide professional after-sales service.