Tecnifibre X-One Biphase 18

Tecnifibre X-One Biphase 18 is Tecnifibre’s flagship playability tennis string, and for good reason. With plenty of technology packed in for maximum power, feel and comfort, this string is even a great choice if you suffer from arm pain. The 18 gauge is even thinner for increased feel on more precise touch shots.

• Biphase process offers 20% increased durability.
• Multifilament Synthetic string.