Low-Friction Triple-Tandem Plastic Pulley, 25/38/50mm Diameter

This triple plastic pulley in tandem is mounted on an open-sided steel frame with hooks at each end. The three ball-bearing plastic pulleys have diameters of 25mm, 38mm, and 50mm respectively, and the low-friction design ensures smooth operation during experiments. The open-sided frame greatly facilitates stringing, as no threading is required. The inner gap of the pulley measures 3mm, and the overall length is 17.6cm. The assembly is capable of supporting over 30 lbs of weight, making it suitable for a range of physics classroom demonstrations involving mechanical advantage and pulley systems.