Head Hawk Rough 17G Tennis String is merely a small update of a classic string type on paper, but in practice, that small tweak makes a huge difference in gameplay. The Hawk string style has been synonymous with control for its entire lifespan, and these strings make a strong nod to this attribute with its central core of elastic fibers and a competitive thickness. What makes these strings unique though, are the Rough patterns on the strings themselves provide a heavy amount of spin. These strings are great for more modern baseline players that go on the aggressive early and often.   Material: Co-polyester Monofilament Gauge: 17G (1.25 mm)