The ball is precision engineered for perfect roundness and balance, ensuring playability and durability. Made of resin material, scratch and impact resistance, you can use it for a long time. Pool Ball that will help you learn how to strike the ball in the same spot, to visualize the of the ball. This standard training cue ball can help you greatly improve your billiard skills. Features -Color:Black -Material:Resin -Size:5.25X5.25X5.25cm/2.06X2.06X2.06in - Replacement Billiard Ball, suitable for pool , home billiards, tournaments, etc. - Through the professional billiards training of scientific and accurate segmentation, how to click the ball at the same time. - The Pool Cue Ball is made of resin, with excellent scratch and impact resistance, more durable, with a longer gloss. - By observing the impact point, we can understand the rotation point, rotation Angle and direction more clearly. - Perfect for game rooms, bars, sports games, casual workouts and players of all skill levels to pool practice. Package list: 1 Cue Ball