suitable for educational and DIY applications, this metal pulley block is suitable for physics learning tools and science experiment kits. Its compact and durable design supports various uses, from creating movable pulley systems to enhancing classroom demonstrations. With its reliable performance, it’s a valuable addition to any physics pulley set or model-making toolkit. Features -Color:Silver -Material:Zinc alloy -Size:3.60X1.30X1.20cm/1.41X0.51X0.47in -High precision: the 36 mm single pulley wheel is meticulously crafted for precise alignment, making it ideal for pulley block science kits and enhancing the quality of experiments -Robust and durable: made of metal, this fixed pulley is built to last, offering reliable performance for physics classroom kits and other educational applications -Lightweight versatility: this mini pulley is compact yet strong, suitable for creating block and tackle pulley systems or conducting pulley science experiments -Broad compatibility: designed to fit various setups, this pulley block is a versatile tool for science experiment kits, physics lab equipment, and diy model making projects -Quick and easy setup: the pulley block with hook is easy to use, allowing for fast installation and making it a practical choice for students and educators alike Package list: 6 x fixed pulley