Eco-Wood-Art Mechanical Wooden 3D Puzzle, Trebuchet Construction Kit

- Eco-friendly 3D models to assemble and customize at school or at home. - Inspiration from medieval siege artillery. Adjustable rubber-band tension for testing different distances. - Eco-friendly sustainable material made of FSC certified wood. Very high precision with laser-cut plywood with amazing details. - All inclusive boxes, self assembly. Does not include the tools or nails screws to hang the model on the wall. - No messy glue required. - Clear colourful step-by-step assembly instructions. - Model includes candle wax for gears, sand paper and rubber bands. Very sturdy construction. - Number of pieces: 94 - Recommended age :14 years old or over. - Proud member of 1 for the Planet, a global organization that exists to ensure our planet and future generations thrive. onepercentfortheplanet.org - Difficulty Level: - Box Dimensions: 10.6 6.1 1.8 in. - Assembled Model Dimensions: 12 7.1 14.8 in.