XL Nickel Wound electric guitar strings are the standard against which all other strings are measured. Our best-belling electric set XL Nickel has been revered by players everywhere since 1974. Made with a high carbon steel core and nickel-plated steel wrap wire XL Nickel strings have a bright versatile tone ideal for a wide variety of musical styles. 10-46 Regular Light strings are our most popular gauge providing a nice balance of tone and playability. XL Nickel Wound D Addario s most popular electric guitar strings are precision wound with nickel-plated steel onto a carefully drawn hexagonally shaped high carbon steel core. The result is strings with long lasting distinctive bright tone and excellent intonation ideal for the widest variety of guitars and musical styles.