Description: Wear Resistant: This Billiard cue stroke trainer 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: Lightweight and compact, portable and easy to carry, will not take up a lot of space.Suitable for Cue Stroke Practice: It 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 Size Chart: Length:5.72cm/2.25inchInner Hole Diameter:1.8cm/0.71inch Package Includes: 1 Billiards Stroke Trainerwith practice stickers Note: Please allow slightly errors 1-2cm differences due to manual measurement.