Check the listing for details. Golf Putting Hole and Training Cup - Perfect for use with Golf Putting Mat. Condition: New. Listed at 12.97 USD. Putt Training Hole and Accuracy Cup - Perfect for use with Golf Putting Mat Practice anywhere - Take this portable putting cup anywhere to practice your putting stroke indoor or outdoor. Whether its in your basement, at the office or outside, this putting aid will help you master your putting game. Pinpoint Accuracy - The black hole is cut to be a regulation sized golf hole at 4.25 inches and this comes with a red insert that makes the hole 2 inches. Simply put in the red insert for a more difficult putt to really dial in your accuracy. Once the red insert is in, any putts that are not dead center will rim out. Repitition for Lower Scores - Bust this putt trainer out anywhere to get some strokes in. Muscle memory will have you shaving strokes in no time Durable - Made of a flexible rubber material. This can bend, but won't break. Use this along with our "TrueBirdie Indoor Putting Green and Golf Mat with Travel Bag" for the ideal indoor putting set up. The lip of this putt training cup is super thin for a smooth transition from any surface.