Features: Made from quality plastic, this science toy ensures child safety while providing long lasting performances for repeated classroom or home experiments. Sparking scientific curiosity with this physics experiment drinking bird set, a fun educational tool that demonstrates thermodynamics through hands on assembly and visual observation. Enhancing children's motor skills and logical thinking as they assemble and operate this physics demonstration device that illustrates permanent motion principles. The selves operating drinking bird creates captivates visual effects to help students grasp complex physics concepts through direct observation and interactive learning. Perfect for both home education and school demonstrations, this ready to use set requires not additional tools for quick setup and immediate physics exploration. Specifications: Materials: Plastic Color: As The Picture Shows Weight: approx.60g Size: Mixed Package Includes: 1Pc Physics Sciences Experiment Drinking Bird Toy note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!