Line M Up Pro Precision Golf Ball Alignment Identification ToolSnaps onto ball to allow for accurate markings Multiple different ball marking and alignment options Line up shots by using the line to point you in the right direction Practice putting straight by watching the line on the ball as it rolls Includes a Sharpie Mini Line M Up snaps onto your golf ball to allow you to easily and accurate add alignment and identification marks. There are many different marking options that allow for a variety of uses. Use