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Description:, Replacement ball for Tennis Trainer., Tie the ball to the base by rubber band, no need to pick up the balls frequently., Use for

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Description:, Replacement ball for Tennis Trainer., Tie the ball to the base by rubber band, no need to pick up the balls frequently., Use for

6x Elastic Tennis Ball with Cord Tennis Replacement Ball Tennis Accessories Green

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Description: [Exercise Your Reaction Ability] bouncy wristband ball is suitable for wrist exercises or play, helping to improve reaction ability, eye hand coordination ability. [Material] Sports wrist balls on a string is made of durable PU material for durability and long-term use.And the wristband is made of widened nylon material, making it comfortable to wear during exercise.

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