• Line M Up snaps onto your golf ball to allow you to easily and accurate add alignment and identification marks. Many different marking options allow you for a variety of uses. Use your marks to align your shot or tell if your putt is rolling straight. Line M Up also works great to add unique identifiers to you ball. The Line M Up Pro Ball Marker enables you to mark your straight line to the pin to sink more putts. Includes a Sharpie to mark your ball. 
• Snaps onto the ball to allow for accurate markings
• Multiple different ball marking and alignment options
• The ball marker enables you to mark your straight line to the pin to sink more putts
• Includes Sharpie
• Used as a playing aid as well as training aid