The Perfect Putter Golf Training Aid w/ Case. This training aid is designed to keep all key set up putting fundamentals consistent. The Fundamentals will help you with alignment, stance width, ball position and eyeline. The 2 rulers can also be used to test your consistency getting the ball started on line. Compatible with the Path Trainer. Attaches to the Path Trainer making it a great combo to work on the set up fundamentals. Manufactured 100% with the highest quality non-corrosive 316 stainl Content: It comes inside a synthetic leather bag.