Tecnifibre X-One Biphase 17 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 17 gauge is even thinner for increased feel on those touch shots.
- Biphase process offers 20% increased durability.
- Multifilament Synthetic string.