HIGH DENSITY QUALITY MATERIAL: Lead cubes are made of high density metal elements, non-toxic, safe and reliable, purity up to 99.99%, size is 25.4*25.4 1 inch cubes, vacuum packed to keep the natural appearance and prevent oxidation.

      LASER ENGRAVING: Each cube is engraved with chemical symbols, name, atomic number, density, purity, atomic mass, melting point and electron layer structure, with crisp edges, flat cuts and minimum (+/-0.1) mm market tolerance.

      UNIQUE ASSORTMENT:We cover almost all metals. Other metal products: tungsten, molybdenum, titanium, zirconium, nickel, copper, iron, niobium, tin, chromium, bismuth, aluminium, zinc, magnesium, silicon, lead, carbon. Densities range up to 11 times from 1.73 g/cm3 (magnesium) to 19.3 g/cm3 (tungsten cube).

      WIDELY USED: Lead cubes can be used in labs, offices, science rooms, teachers, gifts, science demonstrations, suitable for different ages, good understanding of metals, elements, different densities, can be placed in the classroom to stimulate students' interest in chemistry, can be collected as artwork.

      BEST CHOICE: This product can not only be used for collection, but also as a gift for family and friends. It is suitable as a birthday gift, graduation gift, Christmas gift, wedding gift and other occasions.