Description: 【Billiards Cue Training Device】: This is a billiards cue training device, designed to help you improve your basic skills and accuracy in the game of pool. It's great for both beginners and experienced players who want to enhance their performance 【Eye Line Correction】: The Billiards training aid features a unique design that allows you to two lines into 1 by looking down at it, helping you adjust your dominant eye line with the trajectory of the ball. This helps in improving your and precision 【Straightness Practice】: With this training tool, you can practice maintaining straightness, which is crucial for successful gameplay in billiards. It provides an effective way to check and correct your cueing action 【Cue Ball Impact Detection】: The Billiard Stroke trainer also enables you to test the effect of your strike on the cue ball, allowing you to make necessary adjustments for better control and accuracy 【Quality Material & Size Compatibility】: Made from PVC material, this training equipment is built to last It's suitable for cues with a diameter of 17-18 mm, making it versatile for use with both large tip cues and small tip cues Package Includes: 1 Billiards Stroke Trainer Note: Please allow slightly errors 1-2cm differences due to manual measurement.