This is a sale of four sets of nickel wound electric guitar strings, light gauge. It includes three sets plus one additional set. I purchased these new a few years ago and had them in stock, but I'm selling them because I've changed the strings I use. - Brand: D'Addario - Model: EXL110-3D - Number of sets: 3 sets + 1 set - String type: Nickel wound - Gauge: Light gauge - For: Electric guitar Thank you for looking.