Brand NEW! Featuring proprietary Xycro Micro-Fibers impregnated with PU for enhanced comfort and power, NXT is the world's most popular multifilament string. Sporting a larger sweet spot than traditional synthetic gut string and a fraction of its shock, NXT has stood the test of time for good reason. For installation, handly gently and avoid over-clamping and crimping. - All international buyers are responsible for all tax, duties and/or customs fees.