The HH-GOLF Putting String guide is a simple yet powerful training tool to help golfers make more putts. The 3M putting string alignment guide sets up in seconds on the putting green and provides an overlying visual aid so you can clearly see the correct line to the hole without encumbering your swing. Down the Line can be used to practice straight putts and breaking putts. For straight putts, the overlying visual aid will help you immediately identify when putts are pushed or pulled and ensure that you are putting down the correct line. For more advanced use, you can pick out a putt with a slight break. Use the putting string to set your line at the correct starting aim point so the ball breaks towards the hole as the putt rolls out. This drill helps solve the common problem of players not starting putts out far enough on breaking putts.