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Very high-performance co-polyester
Since 1987
The Kirschbaum Black Shark tennis string is equipped with an octagonal teeth profile parallel to the string
It has offers super comfortability
A great string in the full and hybrid setups
Kirschbaum Xplosive Speed tennis racquet string, set 40ft/12.2m co-polyester. Tennis racquet String Very high-performance co-polyesterXplosive Speed tennis string is the newest Kirschbaum creation. This soft copoly string uses the latest technology in string manufacturing and the most innovative materials in the Market Place. Its pentagonal shaping provides excellent speed potential making topspin and slice easy. This string is pre stretched using the new develop TFT (Thermo Fusion Technology), that offers less tension, more elasticity to boost power and arm comfort.