Featuring proprietary xycro microfibers impregnated with PU for enhanced comfort and power, NXT is the world's most popular multifilament string. It's X-bonded core increases tension maintenance and power, so players can continue to generate great pace on the ball for longer periods of time. Sporting a 10% larger sweet spot than traditional synthetic gut string and a fraction of its shock, NXT has stood the test of time for good reason. This 16 gauge string is slightly thinner than the 17 gauge, which enhances feel and control when hitting shots. For installation, handle gently and avoid over-clamping and crimping.