10 cube-sets: enjoy the full collection of 10 mm metal-cube, including-cubes with tungsten, titanium, Bismuth, carbon, aluminum, iron, magnesium, copper, zinc and chromium-cube Precision engineering: 10mm-cube is non- and safe for all age groups. They are manufactured using leading technology to produce clear edges and flat surfaces with the lowest market tolerance (+/-0.1) millimeters. Laboratory level purity: Metal-cubes have excellent purity levels, ranging from 99.5% to 99.99% for different elements. The vacuum of the packaging preserves its natural appearance and prevents oxidation. Laser engraving: Each-cube is engraved with a chemical symbol, name, number, density, purity, mass, and melting point. Unique variety: including several rare metals. The enormous 11 fold density ranges from 1.73 g/cm3 (magnesium) to 19.3 g/cm3 (tungsten). Including carrying case studies and elemental table brochures. Senior owner: We really appreciate your support and know that this set of scenes is perfect for your collection of elements, classrooms, scientific experiments, block displays, or educational gifts. Colour:As Shown Material:Metal Size:10x10x10mm Package Contents: 10 * Elements-Cubes 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.