Features: Portable hand cranked generator with detachable parts, which enables hands on STEM learning through physics experiment and energy conversion demonstrations. Crafted from ABS construction ensures safe and easy operat while light weight and sturdy frame allows easy assembly/disassembly for repeated classroom use. Essential physics teaching aid for school students, teacher, and STEM educators conducting electromagnetic induction experiments. Widely used for science labs, classroom demonstrating, maker spaces, and home education environments to demonstrate real world electricity generation principles. Interactive educational generator hands on assembly learning toy that visually explains mechanical to electrical energy conversion through crank powered generator operation. Specifications: Component: Plastics Color: Yellow Size: Approx. 8cm/3.15in Weight: Approx. 120g Package Includes: 1Piece Hand Cranked Generator note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color