Wear Resistant: This Billiard cue stroke training is made of quality acrylic material, which is sturdy, easy to clean, ensuring long term use.Easy to Use: The perforated design on the ball aids in more accurate aiming and striking,Feature: Billiards practice ball is light in weight and compact, portable and easy to carry, will not take up a lot of space.Suitable for Cue Stroke Practice: Billiards training ball helps to improve the stability of your cue stroke, making it an essential training tool for both beginners and professional players.Versatile Use: This Billiard cue stroke exerciser is not only serves as an tool for personal practice but also makes for great entertainment during friendly matches or gatherings, adding fun to the interaction. Specification: Material: acrylic Note: Target ball number is random. Note:Target ball number is random. Size Chart: Diameter: 57.2mm/2.25inchHole: 18mm/0.71inch Package Includes: 1 Billiard Practice Training Cue Ball withpositioning circle Note: Please allow slightly errors due to manual measurement and different monitors.