XL Pure Nickel offers the vintage guitar tone of the 1950s. Pure Nickel wrap wire revives the rich, clean string sound heard in early blues, rock & roll, and country music. Like all D’Addario electric guitar strings, XL Pure Nickel are made with our proprietary Hex-Core, ensuring perfect intonation, consistent feel, and reliable durability. | Pure Nickel sets have a code on the recyclable VCI bag, which you can register to earn Players Circle points. D’Addario electric guitar strings are made in the USA—drawn to our exacting specifications at our New York production facility |