Element Cube Set 10mm Density Cubes Copper Carbon Iron Zinc Titanium Aluminium Bismuth Pure Up to 99.99% for Periodic Table Collection 7PCS

Product Name: Element Cube Set < br > Including 7pcs of density cubes: copper, carbon, iron, zinc, titanium, aluminum bismuth (pure up to 99.99%)< br> There are a few metals we can meet in daily life, and now it is easy to get them collected, with 99.5%-99.99% high purity. They are almost the best purity you can get in the industry with reasonable prices. < br> With 10mm (0.39"), the cubes are hand made with +/-0.05mm tolerance, very accurate cubes with NO sharp edges. Each of them has been protected in vacuum sealed bag to pevent from oxidation. There are 7 models included: Al-99.99%?C-99.9%?Cu-99.95%?Fe-99.99%?Ti-99.5%?Zn-99.99% Bi-99.99%.