This simple yet effective demonstration tool is suitable for teaching the principles of thermal expansion and contraction in a simple way. With its easy-to-use design, this experiment kit is suitable for students of all ages and can be used in a variety of settings, from laboratories to classrooms. Features -Color:Multi -Material:Plastic, stainless steel -Size:27.00X3.80X2.50cm/10.61X1.49X0.98in - The experiment material is a simple and effective way to learn about thermal expansion and contraction. - The physical experiment tool is easy to operate, making it intuitive and easy to understand. - The physics demonstration equipment tool can be used in laboratories, classrooms. - The experiment tool is suitable for students of all ages, making it a versatile and practical teaching aid. - Our thermal contraction tool is a must-have for learning about physics and . Package list: 4 x set of Teaching Aid