Ping Pong Ball
The game of ping pong is played with a ball that is 40mm in diameter. Ping Pong was formerly played with a ball that was 38mm, but the ball was changed to allow for longer rallies and so spectators could see the ball easier.
Ping pong balls come in several different colors; the color used during play is determined by the color of the table and the surrounding environnment.
Ping pong balls are also classified by a "star" system. More stars means a high quality ball - 3 stars is the highest rating.

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