Tourna Ball And String Replacement for Tennis Trainers - universal fit : Tennis Training Aids : Sports & Outdoors
Unique recommends that you periodically replace the original ball and string for your Fill N Drill Tennis Trainer as they wear out over time. This replacement to the Unique Fill-N-Drill comes attached to a strong rubber cord for easy installation so you can start training immediately. Cord stretches up to 30 feet.
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Tourna Ball And String Replacement for Tennis Trainers - universal fit : Tennis Training Aids : Sports & Outdoors
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