Engaging Physics Learning: This set is designed to spark interest in physics for middle school students by engaging them in hands-on electrostatic experiments It's the perfect blend of fun and education, enhancing their understanding and performance of physics. Effective teaching tool: This device is ideal for educators and helps to demonstrate the principles of electrostatics in an engaging way By facilitating interactive experiments, it helps students grasp complex , thereby improving their academic performance in physics. AND EDUCATIONAL: students' imagination and action skills with our static electricity experiment kit. It is designed to stimulate students' interest in scientific exploration and learning, making it a valuable addition to any school's physical science curriculum. PERFECT FOR SCHOOL LAB: A must-have for any educational institution, this kit is an excellent tool for teaching the basics and intricacies of physics and electrostatic experiments. It is designed to be user-friendly and safe for students. Colour:As Shown Material:Plastic+Iron Package Contents: 4 x Electric Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.