B01N6UBDHB Momentus Ace Trainer

The ace trainer was created for all levels of players including beginners. The ace trainer will revolutionize your service motion, help you serve more Aces, increase your first serve percentage, and give you great confidence in the most important shot in tennis
Make sure this fitsby entering your model number.
Magnetic sliding ball technology
Trains for the properly timed acceleration and upward motion necessary for a successful serve
Improves motion for backhand and forehand shots
Country of Origin:United States