The billiards pool balls set is cased in a box including a mahogany 8-ball triangle rack measuring 13\" x 11.5\" x 1.25\", a mahogany 9-ball diamond rack measuring 12\" x 8.25\" x 1.25\", and 16 marble style standard pool balls measuring (2-1/4\") 57mm in diameter and weighing (5.9oz) 168grams. The billiard balls are produced to the most exacting tolerances, ensuring superior playability and durability. The reinforced pool ball racks are more durable and its edge is smooth enough to help reduce the wear of your pool table cloth. The set is great for game rooms, bars, sports matches, leisure exercise, and players at all skill levels.