A pulley design that is easy to use, facilitating student engagement and understanding. Made from iron and plastic, this set is both safe for students and practical for repeated use. Good for teaching physics, this pulley set helps students learn about pulley mechanics through interactive experiments. Features -Color:Black -Material:Iron, Plastic -Size:12.00X4.00X1.00 cm/4.72X1.57X0.39in -Size:9.00X4.00X1.00 cm/3.54X1.57X0.39in -Educational physics tool: for educational purposes, this pulley set aid in teaching students concepts of pulley mechanics -Easy-to-use pulley: the simple pulley design simplifies the experimental process, allowing students to -Safe and practical: constructed from iron and plastic material, this pulley set is both safe for student use and sturdy for repeated experiments -Versatile pulley combinations: the set includes multiple pulleys, enabling various combinations to explore different physics principles -Experiment set: provides a comprehensive set of tools, including pulleys and ropes, to facilitate a wide range of physics experiments Package list: 2 x Single Pulleys 2 x Double Pulleys