Description: 【Material】: Electrostatic Induction Generator is made of pp material, which is . The sturdy design ensures long term use, making it ideal for educational and experimental purposes 【Innovative Design】: Electricity Generator is equipped with a user friendly brush design, and the copper wire is mounted on a spring to minimize wear on the charging plate and conductive parts during friction experiments. The large drive wheel and thickened metal crank handle enhance stability 【Multifunction】: Leyden Jar Generator is used to obtain large charges and high voltages (tens of thousands of volts or so) in electrostatic experiments, and is suitable for a variety of electrostatic experiments. It can be used to study distribution on conductors, electric field lines, tip discharge, vacuum tube discharge, etc. 【Adjustable Discharge Settings】: Educational Physics Equipment provides two discharge modes. When connected through the connection plate, it provides coarse static electricity at a slower frequency; when disconnected, it provides fine static electricity at a faster frequency 【Compact Size】: The size of Physics Static Generator is 28.8cmx19cmx32cm/11.34inchx7.48inchx12.60inch, which is compact enough for easy use while still providing ample power for comprehensive experiments in educational environments or personal exploration in the field of electrostatics Size Chart: 28.8cmx19cmx32cm/11.34inchx7.48inchx12.60inch Package Includes: 1 Electrostatic Induction Electricity Generator