TECNIFIBRE X-ONE Biphase 17 / 1.24mm tennis racket strings

The premium class multifilament  strings X-ONE Biphase will give your tennis racket the right contact with the ball and more comfort when performing strokes.

This is the choice for those who want tennis racket strings with well-maintained tension.

X-ONE Biphase strings are extracted and reinforced with High Heat Capacity technology and the innovative Trimerization chemical process, which heats the strings at various temperatures to strengthen their surface while increasing dynamic efficiency and durability.

The patented Biphase process extends the life of the strings by up to 20%.

Like the NRG2 strings, they contain Polyurethane 400, which reduces kickback and vibration during bounce.