Description: 【 Iron Construction】: This pulley stand is crafted from  iron, ensuring long term durability and stability for various physics experiments 【Compact and Practical Design】:  Pulley block set  is designed to be compact yet functional, making it ideal for classroom settings or home experiments 【Educational Tool for Physics Experiments】: Physics lab science kit for elementary science education, this pulley set helps students understand the principles of mechanics through hands on 【Easy to Assemble and Use】: The straightforward design allows for quick assembly and ease of use, enabling students to focus on learning rather than setup 【Wide Application】:Educational science experiment is ideal for home, school or use. Pulley Block Physics Experiment is also an ideal birthday gift for  children Size Chart: 15cmx7.9cmx27cm/5.91inchx3.11inchx10.63inch Package Includes: 1  Pulley Block Physics Experiment Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.