Dunlop Classical Strings are designed to achieve tonal balance, smooth tactile feel, and the wide dynamic range required by classical guitarists. The bass strings feature a high grade silver-plated copper wrap surrounding a nylon core for increased fundamental, playability and focused low end. Our treble strings are made of DuPont Timex for consistency, ease of tuning, and a warm but singing tone. Every set of Dunlop Strings come packaged utilizing three levels of moisture protection and sealed in a VCI Fresh Technology (Vapor Corrosion Inhibitor) bag to guarantee that your strings arrive as fresh as the day they were made. Gauge: .028, .032, .040, .29w, .35w, .43w.