Biphase Process: pre-stretching of the matrix during the production process for added durability (by 20%).

PU400 Inside: 400% Elasticity for maximum power and shock absorption.

X-One Biphase is a multi-filament string constructed using a new variation of the tried-and-true Tecnifibre process.

X-One Biphase combines H2C (High Heat Capacity) microfilaments for power and feel, with NRG microfilaments for dynamic response. These microfilaments go through a chemical “trimerization” process to increase cohesion when dipped into polyurethane for bonding, and external protection against wear and notching. As with other Tecnifibre strings, the polyurethane also absorbs vibration and reduces shock. Patented Biphase process extends string life by 20 percent and increases spin performance.

Biphase will reduce muscular fatigue, have dynamic properties similar to natural gut, and offer excellent durability.

 12 meters cut length string set from fresh reel. Does not include retail packaging.