Not Sold as a Set - 16 Balls Available: You choose which ball or balls you need or want. These 2023 Replacement Regulation Size Pool Balls by Go Sports Billiards are designed in the USA and manufactured in Guangdong, China. These classic model balls are 2.25 inches in diameter, weighing 6.5 ounces each. Made for indoor games and sporting goods, these billiards balls are essential for a game of pool. The Go Sports Billiards brand ensures quality and durability, making these balls a reliable choice for billiards enthusiasts.