Feature
●Ball Material: Natural Rubber
●Cord Material: Rubber, Nylon
●String Length: 23.2 inches (590 cm)
Description
Product Description
Cord Length: Approx. 23.8 ft (6.2 m)
Materials: Rubber, nylon, steel.
1 x Hard Tennis Ball
No base
Amazon.com Review
新考案ストリング搭載で実践感覚のボールが戻ってくる『カルフレックス 硬式テニストレーナー』用スペアボール。ストリング部分：ナイロンヒモ約2.4m、ゴムひも約3.5mを組み合わせ、自然なボールの戻りを実現。
From the Manufacturer
TT-31 Junior Jr Solid Tennis Trainer
TB-31 Junior Hard Spare Ball
Replacement Spare Ball
TT-31 Junior Jr Solid Tennis Trainer
The ball comes back with an updated string for a hands-on feel.
Junior hard tennis, rally practice, and special training: The string part: nylon string, about 8.5 ft (2.7 m) and an elastic cord, approximately 12.8 ft (3.5 m) to achieve a natural ball return. Junior hard tennis ball (non-pressure ball) 1 ball base (weight) 1 piece string length approx. 23.6 ft (6.2 m) Material: rubber, nylon, steel *This ball is a little softer than regular hard balls and will not bounce as much as regular hard balls
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| TT-11 General Hard Tennis Trainer | TB-11 Hard Spare Ball | TT-21 Safety Valve Soft Tennis Trainer | TB-21 Safety Valve Soft Spare Ball | |
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| Customer Reviews |
470
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49
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462
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90
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| Price | ¥1,100 | ¥609 | ¥1,400 | — |
| Hard non-pressure ball | Hard non-pressure ball | soft tennis ball | Soft Tennis Spare Ball | |
| Cord Length: | Approximately 20.2 feet (6.2 | Approximately 20.2 feet (6.2 | Approx. 19.2 feet (5.9 | Approx. 19.2 feet (5.9 |