Cord Length: Approx. 19.2 ft (5.9 m).
Materials: Rubber, nylon, steel.
1 x Safety Valve Soft Tennis Ball
No base
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 ソフトテニストレーナー』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。
TT-31 Junior Jr Solid Tennis Trainer
Replacement Spare Ball
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
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 | |
---|---|---|---|---|
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 |