Feature:1. Polyresin: The billiards are made of high grade polyresin. Each ball is calibrated and polished, and has excellent scratch resistance and impact resistance.2. Specified Size: Each ball has a specified size and it is well made, perfectly replaces the old one, and has a long service life.3. Ergonomic: The billiard ball conforms to the ergonomic design, and it has the best color saturation and luster, and can prevent visual fatigue.4. Complete Set: The complete set of 16 balls, including 15 solid balls and a cue ball, is a billiards group with classic design to maximize the consistency of the game.5. Small: The billiard ball is small in size, easy to carry and store, convenient to use and good in performance. This product is applicable to American and black eighth class table, with strong practicability.Specification:Item Type: Billiards BallsMaterial: ResinGross Weight: 2984g/105.3ozBall Diameter: 5.72cm/2.3in.Package List:16 xBilliards BallsNote:1. Please allow 1 to 3mm error due to manual measurement. thank you!2. The calibration of the display is not consistent, and the color of the item displayed in the photo may be slightly different from the actual object.