- Separate spare pools white sphere with a diameter of 60.3 mm "automatovka" - This ball is used in billiards "machines" that have a system of passing ball with a resolution size balls. - 60.3 mm white ball roll off somewhere else other than color pocket billiard balls with a standard diameter of 57.2 mm - CAUTION: standard diameter pool balls is 57.2 mm - Material: hardened polyester - Produced by Aramith Saluc