The Putting Arc is a revolutionary new training device, which will guide you to a simple, repeatable, and understandable approach to putting. The Putting Arc will assist you in developing a confidence when standing over your putter felt by only a small percentage of golfers, a confidence in your ability to direct the golf ball exactly where you intend. Comes in original box (Missing instructions and a video disk). Available online. Not sold anymore. Golf Digest rated the Putting Arc the #1 putting training device which you can use with your own putter. Some of the other highly rated training devices have been on the market for 20 to 30 years, so this rating covers a lot of training devices over a long period of time.