Billiards with a hole. Pool cue stroke training Description: [Wear Resistance]: This pool cue impact training is made of high-quality acrylic material, which is durable, easy to clean, and ensures long-lasting use. [Easy to Use]: Perforated ball design helps you aim and hit more accurately, [Feature]: The billiard ball is lightweight and compact, portable and easy to carry, does not take up much space. [Suitable for stick stroke exercises]: The pool ball helps to improve the stability of the club stroke, making it an essential training tool for both beginners and professional players. [ Versatile Use]: This pool cue stroke exercise device not only serves as a personal exercise tool, but also provides great entertainment during social matches or meetings, adding fun to interaction. Specification: Size Chart: Diameter: 57,2 mm / 2,25 inch Hole: 18mm/0,71 inch The package includes: 1 billiard ball for training exercises with positioning wheel