Senston 2pcs Tennis Ball with String for Training

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ITEM INCLUDING: 2 x training ball with string. (The stretch nylon rope is 3.8meter long and can stretch up to 7.5meter.)
EASY TO USE: This tennis trainer is convenient for training without picking ball, and it is lightweight and portable, helpful for single person practice. It could also improve your concentration, athletic ability and hand and eye coordination, and develop interests of sports
FOR TENNIS: Great gift for your friend, family members and children who love playing tennis and it can help to improve your stroke action, footwork and hitting. Multipurpose trainer for practicing all your tennis skills.
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