Billiard Trainer Ball Pool Cue Snooker Stable Batting Practice Hitting Tool 16mm Features: * Made of resin material, durability and functional * Pull the cue back and forth in the hole to practice the balance of the cue and achieve accurate shots * Insert into the hole to support back and forth practice, easy to aim * Two sizes are available, the inner diameter of 17mm is suitable for American nine-ball, and the inner diameter of 16mm is suitable for English snooker * A learning aid designed for billiard beginners, helping to connect the movement, trajectory, power and serve of the cue Specifications: *Product Name: Billiard Trainer Ball *Material: Resin *Size: approx. Inner diameter: 17mm/0.67inch (for American nine-ball) Inner diameter: 16mm/0.63inch (for English snooker) *Color: White *Weight: about 150g Package Content: 1 x Billiard Trainer Ball Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data(1cm=0.39inch) RESILIENT CONSTRUCTION】 Made from resin material, this trainer ball offers reliable performance that withstands regular use in practice. IMPROVES AIMING SKILLS】 The design allows you to practice pulling the cue back and forth, enhancing your aim and shot accuracy with every session. TWO SIZE OPTIONS】 Available in two sizes 17mm inner diameter for nine ball games and 16mm inner diameter for snooker, compatibility with your preferred game. IDEAL FOR BEGINNERS】 This learning aid is perfect for novices looking to develop their skills by understanding cue movement and shot execution. SIZING ADVISORY】 Remember to refer to your specific size needs rather than relying on standard sizing charts. Available sizes 17mm or 16mm.