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Pre-stretched with TFT (Thermo Fusion Technology) developed by our technicians which guarantees a longer durability by reducing tension loss
Constructed with an extra layer of low friction polyamide coating
Utilizing a unique construction
Diadem Impulse is perfect blend of comfort
A constant dynamic response of the string bed and the maintenance of the string tension grants steady playing characteristics and performance
Kirschbaum Black Shark Tennis Racquet String, Reel 660ft/200m Size:17 (1.25mm) Pre-stretched with TFT (Thermo FusionThe Kirschbaum Black Shark tennis string is equipped with an octagonal teeth profile parallel to the string. Using a specially developed technique we accomplish peaks for an optimum grip at the ball to ensure the best slices and spin transfer. Made in Germany, Since 1987.