If you want quality at low price, then the Imperial Deluxe Billiard Ball Set is just what you need. This regulation set of 2.5" diameter, 6-ounce balls has 15 numbered table balls and an oversized 2.375" cue ball. Made of polyester resin, they resist chipping and cracking. A great value ball set. Designed for coin operated pool tables and tables that use a oversized cue ball return.