All pool games use a cue ball, plus either 7 (7 Ball), 9 (9 Ball), 15 (8 Ball, Straight Pool), or 21 (Baseball) balls depending upon the game.
There is no game of pool practice, so there are no red balls. The 3 and 11 balls are red in the game of pool however.
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The dials are used to count balls for a game of straight pool.
There are seven striped balls in billiards.
the balls used in game, pool.
In 9 ball - 9 In 8 ball - 15
Used pool balls of any type have very little value unless they are older bone or ivory collectible types.
Depending upon the game, there are from 7 to 21 colored balls.
Unless the balls are made of ivory used pool balls have very little value. Balls go out of round as a result of normal play, and therefore a new set of cheaply made $30 balls is almost certainly superior for play than set that has had a lot of use. Ivory pool balls have sold for more than $200 apiece. If the pool balls are not collectible, such as ivory, they have little collectible value.
Pool balls are made of a phenolic resin. This comes from a mix of phenol and aldehyde.
The number of balls depends upon the game. All balls use a cue ball plus 7, 9, 15, or 21 numbered balls.
Friction. The movement of the rolling pool balls does no damage to the pool felt. However, the pool balls accumulate pool chalk that is very abrasive. The pool chalk accumulated on the balls and dropping on to the felt both result in tearing of the felt fibers as balls are struck or slide on the table. Occasionally balls bounce or are jumped on the table, resulting in even more damage. Damaged felt is a part of playing pool.