Putting an alignment line on a golf ball has proven to be a tremendous aid in sinking more putts per round. This "Line M Up" Model makes it easy to get a precision line where you want it on the golf ball. The line-guide snaps over the ball and holds it securely in position while you mark the ball. Available colors are assorted, usually Blue, Green, Red or Black. We'll ship one of these unless you indicate a color preference when ordering.