You can easily align the line when putting. It serves as a guide to make it easier to determine direction when putting. No matter how far the distance, if it's the same score count at 30cm, putting is important. By setting a clear target, you can putt with confidence. When you can't finish your swing, you tend to hesitate and can't stroke. It is also recommended to draw a line on the ball. It makes it easier to set a target when putting. It should help with setup as soon as possible. Since it is imported from overseas, there may be minor scratches. Please refrain from purchasing if you are concerned about minor details. The magnet is strong, so it's easy to remove by sliding it off. Size: Approximately 3cm in height and width. #GreenMarker #LineMarker #Marker #Base #Line #Putter #GolfBall