5Pcs Metal Block Set-Brass, Copper,Iron,Steel & Aluminum for Density Investigation,Specific Gravity,Collectible,Specific Heat Experiment

These are exactly like the website description, measurements true to the website description. They were well packed in a nice little box. I'm giving it five stars because it's exactly what I expected and completely aligned with the description. On a completely subjective note, I'm very fascinated with this kind of thing and so I was a very happy with this purchase because it did not disappoint.

I thought they are bigger, but it’s actually the perfect size for me. I will use these for my meditation. Thanks!

I purchased these for my son’s science fair project. They arrived quickly and looked exactly as they did in the picture. These were used to test how pairing different metals in an electrolyte solution generates different amounts of electricity. Since the amount of electricity generated by pairing different metals aligned with what is known about the properties of these metals, the product seems to be a reliable product to use for science experiments. I should also mention that my son thought that the metal pieces look cool and all of my kids were immediately interested in what we would do with the metal when we opened the package. I plan on purchasing more products from this seller for future science fair projects.

Overall, these are great. I used them to show my class that different materials have different density. The only thing I would have liked is the material name to be etched into the cylinder in case the labels come off.

I am absolutely thrilled on these items

They are pretty small. Plus I can't figure out why the one marked "steel" isn't magnetic?

Great for learning

I love these