Complete set of 16 balls includes 8 solids, 7 stripes and a cue ball; each ball is regulations size, measuring 2-1/4" in diametereach pool ball is made of high-grade poly resin calibrated and polished to perfection, which provides exceptional scratch and impact resistance.designed with perfect roundness and balance, uniform weight and hardness, brilliant colors and a friction resistant roll; ideal for billiard players of all skill levels our ball is a total of 16 American 8-ball balls. The 8-ball game uses the same main ball (white) and a total of 15 target balls from 1 to 15. Balls 1 to 7 are full-color balls. Number 8 is a black ball. , 9 to 15 are two-color balls (also known as suit balls)great for game rooms, bars, sports matches, leisure exercise, and players at all skill levels.