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Your cart is empty. One (1) high quality, double plastic pulley in tandem, on an open sided steel frame, with hooks at each end carrying two low friction, ball bearing plastic pulleys with diameters of 38 and 50 mm respectively. The open sided frame greatly facilitates stringing up as no 'threading' is involved.
Inner gap of pulley measures 3 mm, overall length is 14.8 cm. Capable of holding over 30 lbs of weight.
slomobile
Reviewed in the United States on June 6, 2024
I ordered several Elsco Labs products at the same time. Each one is the quality you would expect in classroom lab products that need to last several years.This tandem pulley set is well designed with hooks in line with the pulleys and one larger than the other so strings don't interfere.Ordered with clamp on 25mm pulley , spring set and spring scale for experiments with Hooke's law and mechanical advantage.Spins smoothly. Hangs plumb.
All Outta Bubble Gum
Reviewed in the United States on November 6, 2024
Got these for use in some lightweight animated Halloween props. Perfect! Was able to remove the pulleys and cut the brackets in the middle to create two separate pulleys.
In Due Time
Reviewed in the United States on April 24, 2018
Good solid little pulleys for being plastic and they have center bearings which let them spin very smoothly.
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