Extra light 6 string set for acoustic guitar from SP series that is designed to provide excellent tone, clarity, and response. Strings are made from steel core with 80/20 bronze winding which provides a warmer sound than 92/8 phosphor bronze and is suited for strings that have deep, rich basses and bright trebles. Set ensures maximum string life and a clear, rich, and exciting tone. Gauges: .010, .014, .023, .030, .039, .047.