Thank you for viewing! ☘ ⭐️ First come, first served! ☘ Bundle discounts available! This widely used pulley set is suitable for schools, laboratories, and family experiments. It's an experimental tool for teachers and students. Deepen memory - The pulley block set demonstrates the principle of pulleys and their operating mode in real machines, impressing students. Physics experiment kit - This type of physics experiment can stimulate students' practical abilities and cultivate their ability to observe, think, and analyze. Learning method - Through experiments, introduce children to fixed pulleys, movable pulleys, mechanical advantages, and the principle of energy conservation. Packing list - This pulley block includes 2 single pulleys, 2 double pulleys, a bracket, and rope. Dynamometers and weights are not included. Although new and unused, it is a foreign-made product and may have some burrs or stains due to long-term storage. Please check the actual photos. If you would like additional photos, please feel free to comment! ♥ I have many other wonderful items for sale too ♡ ↓ Further discounts available for bulk purchases ↓ #MINAMI'sShop Management number: 1577 $$999