Gamma Synthetic Gut 17 is an all-around performance tennis string that offers a balance of playability and durability for all playing levels and playing styles. The thinner gauge offers optimal playability while still providing good durability. Built with a combination of Nylon 6 core, nylon monofilament wraps, nylon coating and Gamma Irradiation Processing. Provides exceptional all-around performance for extra playability with superior durability. Price: $ 3.5 Read More and Buy it here!