Description: 【Quality and Wear Resistant】: This billiard cue stroke trainer is made of quality acrylic and glass material, which is sturdy and long using time 【Easy to Use】: Insert into the hole to support the move back and forth to practice playing, which is convenient for aiming 【Feature】: Light in weight and compact, portable and easy to carry, will not take up a lot of space 【Suitable for Cue Stroke Practicing】: 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 stroke exerciser is widely applicable for various games such as nine balls, eight balls, snooker, etc. Specification: Material: Acrylic And Glass Size Chart:Ball Diameter: 6cm/2.36inch, Hole Diameter: 1.8cm/0.71inch Package Includes: 1 Billiard Rod Trainer Note: Please allow slightly errors due to manual measurement and different monitors.Customer satisfaction is our primary concern. If the product is somehow cracked or broken during shipping, please feel free to contact us. We will try our best to give you a satisfactory solution.