Product Details1.Safe Material: The metal cube are made of high-density elements, suitable for all ages, they are practical educational applications for different grades, and are also very suitable for element collection and display.2.High Density: Zero tolerance cube are made of high density elements, cut and hand-polished, the polishing process completely removes cutting marks, there will be some traces of hand-polishing, with natural metal (element) color, matte surface, will be very suitable for element collection, hobbies, DIY, experiments and material display.3.Marked Information: Each metal density cube measures 1 inch/25.4 (+/-0.1)mm. They have laser-marked information on the surface, including number, chemical symbol, name, density, purity, and mass.4.
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