DescriptionThis is a friction electrostatic experimental equipment tool set for students, which is made of premium material for durable and safe use. The professional physic teaching equipment can train the student's practical ability and their interest in learning, easy to use and convenient to store.Features-Color:As Shown-Material:ABS-Size:15.00X4.00X4.00cm/5.89X1.57X1.57in- These friction electrostatic experimental tools are durable and safe, can be used for long time.- Put education in fun, cultivate scientific knowledge. Perfect for any school, or laboratory use.- Stimulate imagination, action ability to the interest in learning, these physical experiment tools offer you great help.- Put the ball in the bottle, rub the plastic plate on the clothing or fur, and then hold the plastic plate close to the bottle to levitate the ball, easy to use.- The teaching tools are very interesting and allows students to better understand electrostatics in intuitive demonstrations and interesting experiments.Packing list2 x spoons2 packs x small balls2 x bottles2 x plastic boards