The GSE billiard practice training cue ball is made from polyester resin which provides exceptional scratch and impact resistance, and is precision engineered, ensuring superior playability and durability, measuring 2.25"/57 +/- 0.15mm in diameter and weighing 6oz/168 +/- 3grams. The cue ball with a cross and 4 spots can help you learn how to strike the ball in the same spot, and you can know more clearly which point will rotate it, as well as the angle and direction of rotation by observing the impact point. It is great for game rooms, bars, sports matches, leisure exercise, and players at all skill levels. 

• Premium Material: AAA Grade pool cue ball is made from quality polyester resin which provides exceptional scratch and impact resistance, more durable and comes with a longer lasting gloss shine.
• Design: The training cue ball is precision engineered for perfect roundness and balance, ensuring superior playability and durability.
• Size: The cue balls for pool Measure 2.25"/57 +/- 0.15mm in diameter, and 6oz/168 +/- 3grams in weight.
• Visualize Ball: This practice cue ball with lines and spots is professional billiards training with scientific and precise point division that will help you learn how to strike the ball in the same spot. By observing the impact point, you can know more clearly which point will rotate it, as well as the angle and direction of rotation.
• Applicable: Great training ball to improve your skills. Great for game rooms, bars, sports matches, leisure exercise, and players at all skill levels to billiard practice.