6-Piece Parallel Plastic Pulley Set, 50mm Diameter

This set of six plastic pulleys on closed steel frames includes single, double, and triple parallel configurations, all with 50mm diameter wheels. Each pulley features a low-friction ball bearing design and hooks at both ends for attaching loads and support lines. The set includes two single pulleys (9.8cm overall length), two double parallel pulleys (14.8cm overall length), and two triple parallel pulleys (17.6cm overall length). The inner gap of each pulley measures 4mm. Each pulley is rated to hold over 50 lbs. Suitable for physics experiments investigating mechanical advantage, force multiplication, and Newton's force laws using various single and compound pulley configurations.