Tungsten Cube with 99.95% Purity Element Simple Substance, Which is Suitable for Element Collections, Hobbies, Diy, Experiments, Material Display. Perfect for Density Samples, Teachers, Classrooms, Home-Schooling, Science Kits, and More. Metal Samples Cubes Are Made of High Density W Element Cube, Safe and Reliable, Which Are Practical Educational Applications for Different Grade Levels, Also Are Suitable for Element Collections and Display. W Element Cube Appearance after Precise Cutting and Fine Craftsmanship. Density Cubes Can Be Applied for Labs, Offices, Science Sections, Teachers,, Sciencestrations, and Are Suitable for Different Ages, with a Nice Understanding of Metals, Elements, Different Densities, Manufacturer: CHAOUYYZ