Cue sports playing nine-ball. Snooker balls are smaller than American-style pool balls with a diameter of 52.5 mm ( in), and come in sets of 22 (15 reds, 6 "", and a cue ball). English billiard balls are the same size as snooker balls and come in sets of three balls (two cue balls and a red, an object ball). Other games, such as bumper pool, have custom ball sets. Billiard balls have been made from many different materials since the start of the game, including clay, bakelite, celluloid, crystallite, ivory, plastic, steel and wood. The dominant material from 1627 until the
Big Break player to remove one red ball from the table. Once the questions have been asked, the snooker player and Virgo discuss which of the red balls to discard, based on their positions after the break-off and so leaving those easier to pot. After the questions were answered, the remaining time was given over to the snooker player to clear the snooker table of the six reds minus those discarded. One red ball and each coloured ball represented a prize, ranging from champagne, short breaks, televisions, computers and games consoles. The black ball represented the Mystery Star Prize, often a holiday.