Sarsumir 3D Wooden Puzzle Mechanical Gear Model 3D Wooden Craft Model Kits to Build Waterwheel Assembly Wooden Puzzle DIY Kits Building Construction Crafts Kits for Teens Adults Marble Run

• Well Designed and Engineered Mechanical Gear Run Model：Inspired by a waterwheel, the design of 3D wooden model kits intergrates the beauty of machinery and scientific exploration spirit. Complete assembling the model, input the batteries (not included), and observe the gear run with the balls moving along its given path.
• Safe Material and Sturdy Structure: The wood building mechanical construciton craft kits are made of reliable wood. They are well engineered and precisely precutted, every piece fits perfectly without deterioration or deformation after a long time. No blurs, the surface of these components is very smooth and safe for children and adults.
• Ready to Assemble and Easy to Build: No Glue or any other tools needed. Numberd pieces and detailed illustrated step-by-step English instruction of this building kit make it easy to assemble. You will only need to pop out the little wood pieces and follow the instructions to assemble.
• Good Educational Construction Crafts Set: 3D Model Kits to Build is suitabke for kids over 12 years and adults. Building the mecanical model can help to improve patience and hand-eye cooperation skills. It presents you the power of science, brings you self-accomplishment and inspire kids and teens' interest towards science and model building.
• Ideal Gift - The wooden model kits allow kids to enjoy learning while playing. The 3d wood puzzle is also for family activities and enhance parent child relations. Gift Ideal for birthday, New Year and other holidays. Christmas stocking filler for boys girls kids, teens and adults. Exquisite handcraft work can be placed in living room, bedroom, study ect as cool decoration once completed.