Features: Unleashing creativity and learn physics with our Wood Miniature Siege Catapult Model Hands on Assembly Toy Set, for engaging children in hands on engineering project. This easy to assemble wood Ballista model includes detailed instruction manual, making it great for children, teen, student, beginner and science enthusiasts who is interested in exploring the principles of physics and engineering. Very suitable for children aged 8 and above, teenagers, and even adults who look for educational and entertaining activity. Widely used for family activity, homeschooling, classroom teaching demonstration, school science classes, and science exhibition, providing fun learning experience. Enhancing your understanding of mechanics while enjoying fun and interactive project; this wood model serves as both educational tool and teaching tool. Specifications: Color: Wood Color Component: Wood Size: Approx. 12x11x5.0cm/4.72x4.33x1.96in Weight: Approx. 33g Package Includes: 1Set Hands On Assembly Wood Catapult Model Supplies note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color