Mini Density cube set,Study Several Properties of Matter. Learn about density, mass, volume, buoynacy, specific gravity, and flotation while experimenting with real-world materials. Made from commonly used aluminum, copper, steel, brass, and zinc.
II Launch Pad, Porta-Pad*, with blast deflector and standoff, two-piece 1/8 inch launch rod, safety cap and key, no glue/tools required, Quick assembly,
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