Developer's DescriptionBy Tech DudeUsing this pool guideline tool you can become a good 8 ball player.Using this pool guideline tool you can become a good 8 ball player. 8 ball guideline tool will help you to play accurate shots with borders. You can use this as a pool Long line tool.Features:3 LinesPool Long line toolEasy to use.Play double border shots.Fast and slow adjustments.Note: This tool is only for practice.