The Head Lynx tennis string reel is 200m (660ft) long and provides lively touch and superb control. The durable string will stand up to aggressive players so they can hit with confidence. The monofilament string has a gauge of 16 (1.30mm). Designed for aggressive tournament or club players, the LYNX provides a vivid feel and perfect control. Length: 200 m / 660 ft Gauge: 1.20 mm / 18 g, 1.25 mm / 17 g, 1.30 mm / 16 g.