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Tennisball Härte Prüfgerät

Comments:

  • serVando diaz
    serVando diaz over 1 year ago

    Very nice model an idea! I did not know this existed for tennis players.

  • Kristina Narusk
    Kristina Narusk over 1 year ago

    I've played tennis for 6 yrs and did not know such device existed either!

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