Description: 【Set】Includes a high sensitivity foil electroscope, glass rod with silk, and rubber rod with hair (styles and colors sent randomly), providing all essential tools for static electricity experiments 【Educational Value】Ideal for physics teacher, students, and science enthusiasts to accurately demonstrate and detect static electricity, deepening understanding of electromagnetism concepts 【Versatile Application】Great for classroom teaching, laboratory research, science exhibitions, electromagnetic experiments, and exploring the principles of static electricity 【Quality Material】Made from lightweight plastic material; easy to operate, and convenient to carry for both indoor and outdoor educational activities 【Practical Size】Transparent box measures 8.5 x 4 x 9 cm; glass rod is 255 x 8 mm; comes as an 8 piece set for comprehensive learning experiences Specification: Material: Plastic Size Chart: Box: 8.5cmx4cmx9cm/3.35inchx1.57inchx3.54inch Glass rod: 25.5cmx8mm/10.04inchx0.31inch Package Includes: 1 Set Foil electroscope electrical experiment equipment Note: Please allow slightly errors due to manual measurement and different monitors.