XS is breathing new life into coated strings. With its ultra-thin film coating on every wound string and unique polymer treatment on the plain steels, XS offers the highest level of protection for maximum life with an uncommonly smooth feel. XS is the most innovative string ever created. Features XS Nickel strings have the longest life of any D’Addario electric string, plus a smooth, fast feel, with no fraying, peeling, or dampening, thanks to the ultra-thin XS film coating. Reformulated nickel-plated steel wrap wire provides a bright tone with increased output, bite, and sustain With a NY Steel core and Fusion Twist technology, XS Nickel offers greater break strength and unmatched tuning stability—staying in tune 131% better than standard electric strings. XS Nickel sets have a code on the recyclable, resealable VCI bag, which you can register to earn Players Circle points. String Gauges: .010, .013, .017, .030w, .042w, .052w Specifications Gauge : Light Top Coating: XS Number Of Strings: 6 Set Type: Sets Wrap Material: Nickel-Plated Steel