Features: Explore energy principles with this hand crank generator science experiment set, designed for hands on physics learning to demonstrate electricity generation. Crafted from safe plastic for enhanced safety, this lightweight physics teaching tool features a compact design ideal for easy handling and transportation. Perfect for school students, science teachers in classrooms, and parents seeking educational toy to inspire interactive learning at home. Versatile for use in school laboratories, home education environments, outdoor science clubs, and workshops to facilitate practical experiments and team based activities. This educational science set fosters critical thinking, teamworks, and a deeper understanding of green energy concepts, a essential tool for sparking scientific curiosity. Specifications: Materials: Plastic Color: As The Picture Shows Package Weight: approx.95g Size: approx.135x56x56mm/5.31x2.20x2.20in Package Includes: 1Pc Hand Crank Generator 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!