[Material: Grade AAA premium billiard pool table balls set are made of polyester resin which provides exceptional scratch and impact resistance Features: Each billiard ball is produced to the most exacting tolerances meeting all professional quality benchmarks for size roundness density balance weight color and hardness ensuring superior playability and durability Size: Each billiard ball measures (2-1/4") 57 mm in diameter and (5.9 oz) 168 grams in weight "Whats Included: The billiard balls set with 16 billiard balls is cased in a box seven striped balls seven solid colored balls one black art numbered eight ball and one white cue ball" Applicable: Great for game rooms bars sports matches leisure exercise and players at all skill levels]