Are you still looking for some teaching tools to let your student know the electrostatics? Then, our electrostatic experiment equipment set is one of the for you. Adopting , durable for . A perfect physics teaching aid for you. Features -Color:Multi -Material:ABS -Size:15.00X4.00X4.00cm/5.89X1.57X1.57in -Note: random color accessories. - Easy for middle school students and kids to explore, also get interested in physic class. - Light weight and portable, more convenient to store and carry, a great equipment for students to learn the electrostatics. - To promote students' understanding of basic electrostatics knowledge, not only educational, but also very interesting. - These electrostatic science tools are good helpers for teachers, parents, train teachers, professors, etc. - Easy to use, simply put the balls into the bottle, and rub the plastic board on the or clothing, and let it close to the bottle, watch how the ball . Package list: 10 x spoons 2 packs x small balls 2 x bottles 2 x plastic boards