Description: Perfect gifts toys for kids, excellent science toys gifts for boys girls teens in Birthday, Christmas, Children day Easter. These STEM projects are made of sturdy wooden material, the edges of each component have a smooth finish can be tightly integrated, easy to assemble. The finished product are very suitable for display on a table, shelf or showcase in a children's bedroom, playroom or study area. Stimulate children interest and curiosity, kids will be excited and proud of their own model that actually moves. By assembling this wooden building Set, children can develop their hand - eye coordination, stimulate imagination and promote their physical and intellectual development. Specification: Material: Wooden Size Chart: 32.35cmx14.25cmx10.05cm/12.74inchx5.61inchx3.96inch Package Includes: 1 Piece Science Experiment Toys Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.