• 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 |