Wolfram Element Cube - 99.95% Pure Tungsten, 10mm Density, for Periodic Table, Hunter, and More (0.39")

Tungsten Cube W 99.95% Wolfram Element Cube Pure 10mm Density Cube for Element Collection Periodic Table Hunter, and More (0.39", Tungsten)

Cobalt Metal Element - Laser Engraved Density Cube Set for Periodic Table Collection - (Cobalt, 10mm)

EISCO Density Cubes Set - Includes 6 Metals - Brass, Lead, Iron, Copper, Aluminum, Zinc - 0.4" (10mm) Sides - for use with Density, Specific Gravity Activities