WKM Density Cubes Set of 6 Metals, 20mm (Brass, Lead, Iron, Copper, Aluminum, Zinc)

Nice product... Use ful to show density variation among metals... And good to compare colour. I thing i recommend that seller should send the name of metal piece above the sanple.

Nice but can't identify iron, zinc and lead. Others can be identified from the color and weight. Since the cube is not exact 20mm in all sides the weight differs and iron, since and lead are kind of hard to guess becasue of th same color and the weight doesn't correspond to the density. You need to measure the side and identify.

Excellent it is correctly shaped as soon we hold it we understand the density difference in every metal

Some cubes are of 19 mm. They are not perfectly shining 😞 Price is too high. Item can be packed on box so that we can easily put them together

Since the packing was not good, the lead cube was deformed at its edge, since it is soft metal. The seller can pack it in a better material. The density of all the metals is slightly less than their theoretical density (Except Aluminium). Dont know why. Only possible, if there are impurities

Density cubes received as expected. Great for comparing different metals in terms of density, appearance, colors etc.

Total 6 blocks are received. 2 of them are being attracted by magnet strongly. 4 of them are not. 4 of them are of same color. 2 of them are of same color. Dimension of all blocks is 10 mm, 1 cm. Check the photos. Packaging is of poor quality. All blocks are rusty. two blocks have uneven edges. Returning.

Received in a plastic box with names pasted on cubes..