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Here’s a handy, low-cost set of 10 one-inch cubes cut from modern materials. Use these precision cubes to perform a variety of density experiments. The set contains one cube each of aluminum, steel, brass, copper, acrylic, nylon, poplar, oak, willow and polyethylene.
California Proposition 65 Warning
This product can expose you to lead, a chemical known to the state of California to cause cancer.