Unisex 
$13.97 when buying 3+! Tecnifibre X-One Biphase 18G Tennis String offers high heat capacity that creates the ultimate performance of power and feel. Playability similar to natural gut.
Tecnifibre X-One Biphase 18G Tennis String
Composition: NRG2 Micro filaments with polyurethane.The BIPHASE treatment extends string life by 20% . Biphase increases spin and performance.
- Length: 40ft. (12m)
- Gauge: 18 (1.18mm)
- Colors: Natural, Red
Increased POWER and FEEL
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