Package Included: you will get 9 pieces of 10mm Elements Square covering most metal elements of the periodic table, including Aluminum, Antimony, Chromium, Zinc, Iron, Carbon, Titanium, Bismuth, Copper, which are nice for metal collections Nice Purity: metal Square are extremely pure, with exquisite looks, natural metal color, metallic strips, safe and stable to display, the purity is as follows: Al-99.99%, -99.99%, 99.5%, Sb-99.9%, Fe-99.99%, Bi-99.99%, -99.95%, C-99.9%, Cu-99.95% Beautiful Appearance: Elements Square set has a very beautiful appearance after precise cutting and fine craftsmanship; Please protect the metal after receiving the goods Wide Application: density Square can be applied for classrooms, labs, offices, science sections, homes and schools, and are suitable for different ages, with a nice understanding of metals, elements, different densities Reliable material: metal samples Square are made of quality material, stable and study, with round edges for safe handling, and are educational applications for different grade levels material: metal Color as shown Package Contents: 9 x Elements Square Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.