Why do I need a Pro-Line Mark on my ball?

Any Golf professional will tell you that to score well you must make putts. To make putts you must have two things, good speed and accurate clubface alignment. Speed is very important but 90% of all putts missed are due to incorrect club alignment. Your average golfer (15 Handicap and higher) is almost never aligned with the target. Even the best player in the world is constantly struggling to get their putter properly aligned with their target.
The Pro-Line mark simplifies the difficulties of accurately aligning the clubface with the target. When visualizing the break of a putt, you don't stand over the ball, you stand behind the ball where you have a superior view of the slope in the green. Now you can line up the Pro-Line mark exactly where you want the ball to start rolling, then simply line the putter up perpendicular to the Pro-Line mark. It's that simple.
How to use

Simply snap the Pro-Line Golf Tool around your ball. The design allows the ball to rotate freely for exact positioning of the ball.
Hold the finger grips to lock the ball into place for precise marking. Insert the permanent marker into the beveled groove and mark your ball with a perfectly straight line of any length you want, using the thin or thick tip at either end of the pen. When drawing a thin line, keep the tip pressed against one side of the groove.
Push tabs apart, take your ball out, and you're ready to go.