Designed for educational purposes, our pulley set is an essential tool for teaching of physics. The metal construction ensures durability, making it suitable for repeated use in classroom settings. Students can use these pulleys to create different pulley systems, enhancing their understanding of how pulleys can be used to lift weights and reduce effort in real-world applications. Features -Color:Multi -Material:Iron -Size:12.00X4.00X1.00cm/4.72X1.57X0.39in -Size:9.00X4.00X1.00cm/3.54X1.57X0.39in -Durable metal material: constructed from metal, ensuring durability and reliability for repeated use. -Versatile pulley configurations: offers both single and double pulley setups, providing flexibility for different experimental scenarios. -Comprehensive pulley experiments: enables both fixed and movable pulley experiments, aiding in the understanding of mechanical principles. -Educational physics tool: for middle school physics classes, helping students improve their experimental techniques and understanding. -Wide range of experiments: can be used in various mechanical experiments such as force measurement, equilibrium, and force resolution Package list: 4 x Fixed pulley 4 x movable pulley 4 x rope 8 x hook 2