Tecnifibre X-One Biphase 18 is a premium multifilament tennis string designed to deliver exceptional comfort, responsive power, and precise ball feel. Its advanced multifilament construction combines highly elastic fibers with Tecnifibre's signature Biphase treatment to enhance durability while preserving a soft, lively response. The ultra-thin 18 gauge increases responsiveness and touch compared with thicker versions, making it an excellent choice for players who prioritize feel, playability, and effortless power.
Intermediate to advanced players seeking premium comfort, easy power, and exceptional touch. Particularly suited to all-court players who appreciate a natural gut-like response and prioritize the enhanced feel of a thinner gauge over maximum string durability.
| Gauge | 18 / 1.18 mm |
| Length | 40 ft / 12 m |
| String Type | Multifilament |
| Technology | Biphase Treatment |
| Package | Single Racquet String Set |