DescriptionThis physics balance floating ball experiment kit is made of good quality material,which is durable and lasting for use. It can exercise students'practical ability, train their observation capability, thinking andanalytical skills. Let them learn physics with happy.Features- Color: Random - Material: ABS - Size: About 15.00X2.00X2.00cm/5.89X0.79X0.79in - The experiment tool set made of good materials, it is safe and durable to use. - Great tool for gravity and anti-gravity experiments. - Stimulate students' interest, improve analysis and observation skills. - Scientific physical experimental tool to exercise student's practical ability. - A good gift for teacher and students, they will be happy!