Description: 【Demonstrate Energy Conversion】:This experiment kit offers a simple and engaging way to demonstrate the conversion of and potential energy, as well as the conservation of mechanical energy 【Educational and Interactive】:This experiment pendulum ideal for use in classrooms, homes, or laboratories, enhances learning through interactive and hands on experiences 【Material】: This Educational Tool is made of metal, ensuring its durability and longevity 【Easy to Use 】:Simple operation allows you to place the roller on the track, adjust its height and angle, then release it to observe potential energy conversion 【Design】: Its full metal designed not only ensures its robustness but also gives it a professional and sleek appearance suitable for any classroom or lab setting   Size Chart: 27x10.5x33cm/10.63inchx4.13inchx12.99inch Package Includes: 1  Maxwell Wheel Science Toy Kits. Note: Color might be slightly different due to the color calibration of each individual . Please allow slightly measuring deviation due to manual measurement.