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Set of 18 Density Blocks. Includes 1 each of 1 cubic centimeter of lead, copper, iron, aluminum, zinc and brass. Includes 1 each of 8 cubic centimeter of lead, copper, iron, aluminum, zinc and brass. Includes 1 each of 6 cubic centimeter ingots of lead, copper, iron, aluminum, zinc and brass. Each block or ingot is stamped with letters indicating its element or compound. Comes with a 2 page instruction booklet. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.



