Mini Cubes of Various Types (LSE) Here?s a handy, low-cost set of five 10mm cubes that can be used in many experiments. What makes it unusual? It offers an array of the materials we actually use today. Learn about density, mass, volume, buoynacy, specific gravity and flotation while experiment with real-world materials. Our set includes one cube each of the following materials: Aluminum, Steel, Brass, Copper, Zinc. Qty :