Crown Sporting Goods Ice Hockey Pucks, 6-Ounce Made using the highest quality materials Tested for durability Designed to be safe and unique Play with the puck the pros use; NHL official size and weight: 3" diameter, 1" thick, 166 grams The vulcanized rubber material slides smoothly on ice, but the grippy, textured walls won't slide off your stick Remarkable flatness, hardness and smooth surface quality for consistent, powerful and accurate shots and passes