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Five (5) high quality, plastic pulleys with 50 mm diameter, each on an open sided steel frame, with hooks at each end. Pulleys are of a low-friction, ball bearing design. The open sided frame greatly facilitates stringing up as no 'threading' is involved.
This set of pulleys is very useful in the classroom to perform many different experimental set-ups investigating Newton's Force Laws.
Inner gap of pulley measures 3 mm, overall length of 9.8 cm. Each capable of holding over 30 lbs in weight.
Started over 50 years ago as a small, family-owned manufacturing company, Eisco now produces over 6,500 product lines for the science education and scientific research markets. They have headquarters in both India and the US, and serve hundreds of distributors around the world.
Their core products include glassware, physics apparatus, biology models & equipment, and chemistry lab supplies. Products are designed by a team of laboratory professionals and engineers with quality and durability in mind.