Copper 0.5" Metal Density Cube - 99.9% Pure Element for Chemistry - Periodic Table Design Educational Scientific Elemental Specimen

Copper 0.5" Metal Density Cube - 99.9% Pure Element for Chemistry - Periodic Table Design Educational Scientific Elemental Specimen

Cube Density Cubes High Density Element for Element Collections Lab Experiment Material Heavy Small Objects Experience(1 Inch,Tungsten)

PFCKE Copper Cube Metal Density Cubes Pure Metal High Density Element Cube for Element Collections Lab Experiment Periodic Table Collection DIY Teacher Science Creative Gift（Copper，1 Inch）