Dispositivo di allungamento della palla ultra

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• 00:27
• 00:48
• 01:09
• 01:29
• 01:50
• 02:11
• 02:32
• 02:53
• 03:13
• 03:34
• 03:55
• 04:16
• 04:36
• 04:57
• 05:18

Stretching balls with selfmade motorized ballstretch device