Hockey puck
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Ice hockey requires a hard disk of vulcanized rubber. A standard ice hockey puck is black, 1 inch thick, 3 inches in diameter, and weighs between 5.5 and 6 ounces (160 and 170 g). [more]
Ice hockey requires a hard disk of vulcanized rubber. A standard ice hockey puck is black, 1 inch thick, 3 inches in diameter, and weighs between 5.5 and 6 ounces (160 and 170 g). [more]
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