ROKR 3D Wooden Puzzles Model Building Kits Cannon Toys - DIY Wooden Catapult Toys for Kids STEM Educational Projects for Boys/Girls/Adults

ROKR wood catapult kit Wheeled Cannon Toy are inspired by ancient battle equipments. The building model kits combines physics concepts with history. It needs self-assembly and require no glue at all. Once completed, it will bring everlasting fun to kids and adults. SPECIFICATION: SKU: KW801 Pieces: 158 pcs Assembled Size: 12.6x5.1x8.3 in Estimate Time: 2 h Material: Wood NOTE: 1.The 3D puzzle kit need to DIY, waxing, polishing, assembling by yourself. The necessary tools are included with a clear English manual. 2.Please wax enough as instructed to keep the gears rotate smoothly. Some parts may be fragile and need special attention when assembling. 3. If you have any problem during assembly, such as parts missing or broken, we are glad to help unconditionally.