Pulley Block Physics Experiments Physics Lab Science Kits for Students Physics Experiment Lab

Flimsy. Pulleys are cheap plastic and whole package is horrible. Designed for mice to operate....!

Disappointed. Not at all the quality I expected.

I bought four sets. One package was definitely a return and then shipped to me not checked. The string and and hooks were loose in the box, and the double pulley hook was bent. I reached out to the company right away with the items missing and damaged. They didn’t offer to replace missing or damaged parts. The stands aren’t very stable, but gave the hands on experience. My students wore safety glasses when using this.

Nuts of the assembly was not correct. Didn't fits

En la descripción del artículo dice que este viene con pesas y un dinamómetro cuando lo recibí no tenía las pesas ni el dinamómetro.

I don't normally give such a low review to a product that does in fact do what it claims and provide what it says. This one technically does - yes, you do get a bunch of pulleys, some string, and a metal stand to use for demonstrations of how a block-and-tackle works.But all the parts are so very cheap and flimsy that you might, maybe, get one decent demo out of it before something breaks and there aren't enough parts left to be useful. If it were very inexpensive even that might be forgivable, but for the price asked, you can certainly get something similar of at least a little bit better quality. The pulleys turn, but not smoothly; the stand is such thin metal that any real force will cause it to bend, tip over, or otherwise collapse; and the metal hooks are so thin that, if they don't just cut through the string, they'll themselves bend. Don't waste your time or money here.