15-Piece Cube Set: Enjoy a comprehensive collection of 10mm metal cubes, including Tungsten, Titanium, Bismuth, Carbon, Aluminum, Iron, Magnesium, Copper, Zinc, Chromium, Nickel, Tin, Antimony, Zirconium and Molybdenum cubes Precision Engineering: The 10mm cubes are non- and safe for all ages. They are manufactured using advanced technology to produce crisp edges and flat surfaces with the lowest market tolerance (+/-0.1) mm. Laboratory Grade Purity: The metal cubes have exceptional purity levels, ranging from 99.5% to 99.99% for different elements. Vacuum packed to preserve their natural appearance and prevent oxidation. Laser Engraved: Each cube is engraved with the chemical symbol, name, number, density, purity, mass and melting point. Unique Variety: Includes several rare metals. 11x density range, ranging from 1.73 g/cm3 (magnesium) to 0.7 oz/cm3 (tungsten). Includes carrying case and periodic table booklet. Colour:As Shown Material:Metal Package Contents: 1set x tungsten cube 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.