The Super Aramith 2-1/4" regulation size training cue ball is crafted from the highest quality phenolic resin, providing exceptional scratch and impact resistance. Each billiard ball adheres to the most stringent specifications in the industry, ensuring superior playability and durability. This cue ball is marked with 6 red dots on the surface of the ball, also known as a measles pattern, allowing you to easily visualize the rotation following your shot. These dots allow you to practice judging the effects of very particular amounts of sidespin, topspin, backspin and other forms of cue ball control. It's intended to help players of all skill levels improve their game.