[Quality] The billiard training ball is made of high-quality resin material, strong and durable. At the same time, the resin billiard balls have red dots, and the rotation of the balls can be seen intuitively.^ [Standard design] 5.72cm resin billiard training ball, bright luster, roundness up to international standards, high hardness. At the same time, it has a fast response in the impact process.^ [Small and portable] The billiards are light and portable, easy to carry and use. Moreover, the red dot practice billiards for adults and children can be used as training balls to improve your skills.^ [Suitable for beginners in billiards] This billiard cue ball is calibrated and polished. At the same time, the billiard training ball can be used for billiard practice to improve your billiard skills.^ [Quality Assurance] We are very confident in the quality of this billiard, if you have any questions about the purchase, please feel free to contact us.