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Diadem Pro X is the most powerful and firm option for string in the Diadem line. Designed with the help of current pro tennis players, this poly string is designed to provide a stiffer option than the Flash string, with a hexagon cross section. The firmness results in an explosive response off the string bed with adequate spin production from the edged shape.
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🇺🇸 Ship from USA · On Agora since 2026
$13.95