Original: A standard ice hockey puck is black, 1 inch (25 mm) thick, 3 in (76 mm) in diameter, and weighs between 5.5 and 6 ounces (156–170 g);[ ] some pucks are heavier or lighter than standard (see below).
Simplified: A standard ice hockey puck is black, 1 inch thick (25.4 mm), 3 inches in diameter (76.2 mm), and weighs between 5.5 and 6 ounces (156-170 g).