Tecnifibre X-One Biphase Natural 12m

The benefits of natural gut without its drawbacks: X-One Biphase ignores humidity and lasts longer. The fibres are half Elastyl, for power, and half H²C, for better tension maintenance, and the core is soaked in PU 400 polyurethane with 400% elasticity. At the end of production the string is stretched between two notched wheels (the Biphase process), which helps it hold tension even better. It is for advanced players after comfort and feel, and Tecnifibre does not recommend it for heavy string breakers. Tension 22-25 kg, maximum 32.