What You Get: 14 pieces of 10 mm elements Squares covering most of the harmless metal elements of the periodic table, including tungsten, aluminum, copper, titanium, molybdenum, iron, zinc, cobalt, carbon, niobium, bismuth, antimony, vanadium, chrome, proper for metal collections Sturdy Metal: the metal Square set adopts sturdy metal, reliable and strong, not easy to deform or rust Precision Machining: the quality chemical elements Squares are precision cut to flat and less dimensional tolerances, very close to theoretical density, nicely finished with pointed edges and corners without burrs Beautiful Appearance: these metal Squares are precisely cut and engraved on the surface with a nice engraving process, which are convenient to know; Please receive the goods, then do metal protection Meaningful Gift: metal elements Squares are appropriate for classrooms, offices, science sections, homes and schools, and are suitable for all ages, better understanding of metals and elements, and a real feel for different densities material: metal Color as shown Package Contents: 14PCS elements Square Set 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.