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Billiard ball
Ball used in cue sports / From Wikipedia, the free encyclopedia
"Cue ball" redirects here. For the video game, see Jimmy White's 2: Cueball. For things called "Q-ball", see Q-ball (disambiguation).
A billiard ball is a small, hard ball used in cue sports, such as carom billiards, pool, and snooker. The number, type, diameter, color, and pattern of the balls differ depending upon the specific game being played. Various particular ball properties such as hardness, friction coefficient, and resilience are important to accuracy.
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- Russian pyramid and kaisa—68 mm (2+11⁄16 in)
- Carom—61.5 mm (2+7⁄16 in)
- International pool—57.15 mm (2+1⁄4 in)
- Snooker—52.5 mm (2+1⁄16 in)
- British-style pool—51 mm (2 in)