This full set of 16 billiard balls is of the highest quality (A grade). They come in an attractive black magnetically-latching box. These pool balls are for commercial or residential use. You can expect these billiard balls to last 10 to 15 years without problem. The balls measure the standard 2-1/4" in diameter and are regulation weight. Our deluxe billiard balls have the most strict tolerances in weight and size variation and color calibration.