Description: 【Wear Resistant】: This Billiard cue stroke training is made of quality synthetic resin 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 lightweight 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 not only serves as a tool for personal practice but also makes for great entertainment during friendly matches or gatherings, adding fun to the interaction Specification: Material: Synthetic Resin Size Chart:Hole Diameter: 1.6cm/0.63inch, Ball Diameter: 5.72cm/2.25inch Package Includes: 1 Billiard Practice Training Cue Ball 1 Positioning Circle Note: Please allow slightly errors due to manual measurement and different monitors.