Material: Made from PP material, this mechanics experiment set is designed to withstand use while maintaining its integrity. The sturdy construction ensures that students can focus on learning without worrying about equipment durability. Physics Learning Kit: This physics teaching equipment set offers a hands-on approach to understanding key physics concepts such as the principles of Archimedes, the balance of forces, and friction. It's an ideal tool for middle school students to learn and grasp fundamental mechanics. Feature: This experiment set is designed to be compact yet comprehensive, providing all necessary components in a manageable size for easy storage and use. Eonal Tool: This physics mechanics experiment kit enriches children's extracurricular activities, helping to develop practical skills and reinforce their knowledge, thereby enhancing their learning experience. Great Gift: This lever pulley system and Archimedes experiment tray balance set makes an ideal gift that combines eon with fun, encouraging curiosity and exploration in the field of science. Specification: Material: PP Size Chart: Package Size: 36cm x 22cm x 13cm / 14.17inch x 8.66inch x 5.12inch Package Includes: 1 Set Mechanics Experiment Box Note: 1. This is not an infant toy; please keep it away from children to avoid ingestion. 2. Please allow slight measurement errors of 1-2cm / 0.39-0.79inch due to manual measurement.