Description Our metal pulley set is for middle school physics experiments, allowing students to explore the principles of mechanics. This set includes both single and double pulleys, as well as fixed and movable pulleys, providing a comprehensive toolkit for various educational activities. Ideal for classroom demonstrations, these pulleys help illustrate concepts such as force, tension, and mechanical advantage. Features -Color:Multi -Material:Iron -Size:12.00X4.00X1.00cm/4.72X1.57X0.39in -Size:9.00X4.00X1.00cm/3.54X1.57X0.39in -Metal construction: made from durable metal, this pulley system is built to last and withstand rigorous use over time -Single and double pulley options: choose between single or double pulley configurations to suit various experimental needs and applications -Fixed and movable pulley functions: perform both fixed and movable pulley experiments to help students grasp fundamental principles of mechanics -Middle school physics teaching aid: ideal for middle school physics experiments, enhancing students' handson learning and operational skills -Versatile experimental applications: suitable for a range of mechanical experiments, including measuring force magnitude, force balance, and force decompositionPackage list: 4 x Fixed pulley 4 x movable pulley 4 x rope 8 x hook 2 x box