Features: brand new and high quality Correct The Rod Action: When the ball is attached to the sights, all the slight deviations in your swing are reflected by the guide.Let you see the wrong action that you have previously ignored. Practice to make the cue movement more standard. Billiard Auxiliary Tool: In billiards, billiards and billiards and other ball sports, the performance is no longer inferior! It is very suitable for beginners, can help you get started quickly and provide practice assistance, and our equipped tail switch allows you to easily control the switch. Higher Hit Rate: The utility Laser Collimation Device that can improve the player fast impact level; Can turn out impacting between mother bulb and object ball and walk and impact position accurately, thereby improve precision. Eliminate Visual Errors: The left and right eyes produce two different images that enter the brain and produce errors.Laser point, clear aiming position, help practitioners to establish the correct targeting habits and ways. Widely Applicable: Pool cue laser sight suitable for all kinds of billiard cues.Can help you quickly become a professional.It is also the best gift for beginners. Specifications: Material: Metal Color: Green/Red Package Weight: approx.96g Size: approx.10x1.9cm/3.94x0.75in Package Includes: 1Pc x Pool Cue Laser Sight note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!