What is inside of a cue ball?

Answer 1

There are two types of cue balls - those made for regular play on a conventional pool or billiards table and those made for use on a coin operated table. The center of the cue ball is of the same material as the surface unless it is a cue ball specifically intended for use on coin operated tables. The coin table cue balls today are either larger but of the same materials, or are magnetic. The majority of coin table cue balls today have a magnet inside that prevents it from being "trapped" the way the numbered balls are when they are pocketed, so that it returns to the player.