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X-One Biphase is a premium multifilament string that combines the best of Tecnifibre’s technologies into a single string to produce power, comfort, and gut-like feel.
One of the string’s standout qualities was how comfortable it was to play with. Even strung at a higher tension, X-One Biphase still retains its cloud-like comfort which is great for any players suffering from tennis elbow or simply looking for an all around arm-friendly string.