Sale PUTT30.com Hole Reducer Green Trainer Sale Price: $20.00 Original Price: $28.00 Subscribe Sign up with your email address to receive news, discount codes, and updates. Email Address Sign Up Thank you! Putt30 is a system designed to help golfers raise their level of putting skills through drills and training aids.The Putt30 Hole Reducer is color coordinated to help show you the proper entry point for every putt. The Putt30 Hole Reducer helps you practice the perfect speed to hole putts. The Putt30 Hole Reducer combines several putting training aids in one. The Putt30 Hole Reducer is a must have for all golf coaches.