The Tecnifibre X-R1 1.25 tennis string is the most accessible premium range string by Tecnifibre. It features a PHP monocore fiber providing great feel and durability, 1,125 multifilaments, which increase its power, and PU 400 inside for greater comfort. The string's durability is further increased by the anti-abrasion SPL coating. The X-R1 1.25 is supplied in a 12m (40ft) set, which is enough for one re-stringing. It has a gauge of 1.25mm.
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The Tecnifibre Duramix HD 1.35 tennis string has a multifilament construction and a Silicon Pyrogene Lubritec additive that reduces elongation and improves durability by up to 40%. Multifilaments have been reinforced with polyester to provide the user with high quality product that offers comfort and top performance. The string has a gauge of 15L (1.35mm) and the set of it provides 40ft (12.2m), which is enough to re-string one racket.
The Tecnifibre X-One Biphase string is used by many professional players including Wael El Hindi and Thierry Lincou, and produces an unrivalled level of power from every shot. The unique string construction with plastic PU Trimerized coating ensures an incredibly durable and responsive string that will last longer, perform more consistently, and generate superior power in every stroke.
The Tecnifibre Black Code 4S tennis string is the official string of the ATP World Tour and this reel is 200m (660ft) long. This monofilament string is made of high-density polyester and has a square section made to provide a maximum level of spin. Thermocare technology keeps it highly flexible and tension maintenance is good. The string is black and gives users 20% more power than the Pro Red Code string and 15% more durability than the Black Code.