Features: Made from friendly ABS plastic with insulated electronic components, ensuring stability and safety for repeated classroom use, school physics supplies. Designed for junior high physics teaching, this mechanical and thermal energy converter clearly demonstrates energy transformation principles with intuitive visual effects, physics experiment equipment. Measuring in compact size, this light weight device is easy to carry and store, ideal for classroom demonstrations and group experiments, physics teaching tools. Features a motor, fan, and indicators light to showcase mechanical, electrical, thermal energy conversion, making abstract concepts tangible for better student comprehension, science lab equipment. Perfectly for middle school physics requirements, enhancing hands on learning and exam preparation through practical energy transformation experiments, educational demonstration set. Specifications: Materials: ABS Color: As The Picture Shows Weight: approx.250g Size: As The Picture Shows Package Includes: 1 Set of Science Experiment Tool 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!