D'Addario XSAPB1253 XS Phosphor Bronze 12-53

D'Addario XS Acoustic Phosphor Bronze is a tremendous leap in coated string technology combining D'Addario's most popular acoustic alloy with the most advanced string coating technology, resulting in clear tone, smooth feel, and superior tuning stability - all with the longest possible string life. With its ultra-thin film coating on every wound string and a unique polymer treatment on the plain steels, XS offers the highest level of protection, for maximum life with an uncommonly smooth feel. XS also features NY Steel high carbon core and plain string wire, along with D'Addario's exclusive Fusion Twist, for incomparable break strength and tuning stability. XS is the most innovative coated string ever created. Setting XS apart from other strings is the new, impossibly thin film coating (1/10 the thickness of a human hair) that completely protects the wound strings from corrosion, without dampening the tone. This new film covering is combined with D'Addario's proprietary dispersion coating, used in their XT line, to protect the plain steel strings as well.