Description: Demonstration Pulley Experiment SetThis is a physics mechanics experimental equipment, specifically designed for middle school students for exploring the functions of fixed pulleys and movable pulleysMaterialThe Fixed Moving Pulley Physics Experiment pulley set is made of wood and metal materials that ensures its longevity and maintains its functionality over timeFunctionAn essential physics experimental equipment for students and teachers, to investigate the mechanical advantage of fixed and movable pulleysEducational ToolThis product serves as an ideal educational toys tool that helps students understand the principles of physics in a fun and interactive wayWide ApplicationGreat for home, school or lab use. Also ideal Birthday and Christmas gift for kids, children in middle school, can enjoy DIY experiments fun while learning basic physical science knowledge Specification: Material: Wood, Metal Size Chart: 17.3cmx18.8cmx5cm/6.81inchx7.40inchx1.97inch Package Includes: 1 Fixed and Movable Pulley Physics Experiment Set Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.