A premium multifilament string, X-One BiPhase delivers superb comfort, feel and a crisp response. A good choice for players seeking an arm-friendly string without sacrificing power. Provides good tension maintenance too. This reel is stringer friendly with printed marks counting out each meter.Gauge: 16g / 1.30mm , 17g / 1.24mm. Length: 660 ft / 200 m. Construction: Multifilament / Polyurethane / H2C fibers / Biphasic treatment. The item "Tecnifibre X-One Biphase 200m/660ft reel + Free Luxilon tennis string" is in sale since Sunday, March 4, 2018. This item is in the category "Sporting Goods\Tennis & Racquet Sports\Tennis\Strings". The seller is "vutenniscom" and is located in San Jose, California. This item can be shipped worldwide.