DescriptionDo you want your students or children to know more clearly electrostatics intuitively? Then, you must not miss our electricity test balls set. Made of plastic material, they are high-quality and durable. Easy to operate, teachers and students are available.Features- Color: As Shown .- Material: Plastic.- Size: 12.00X1.00X1.00cm/4.72X0.39X0.39in- Perfect experimental equipment for explaining the principle of electrostatics . - The operation is very simple, whether it is a teacher, a parent or individual students can use it. - It is interesting and allows students to better understand electrostaticsin intuitive demonstrations and interesting experiments. - A simple and practical teaching and experiment equipment in middle schools. - High-quality material and fine craftsmanship, durable and sturdy for a long time.
