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Amazon.com: Metal Infinity Cube Toy for Kids, Teens, and Adults, Best Desk Gadget and Sensory Tool for Fidgeting, Anxiety, and Stress Relief, Cool Office Decor and Gift for Men in Metal Aluminum
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Density Cubes Set - Includes 6 Metals - Brass, Lead, Iron, Copper, Aluminum, Zinc - 0.4" (10mm) Sides - for use with Density, Specific Gravity Activities - Eisco Labs: Amazon.com: Industrial & Scientific
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