Ernie Ball 2409 Ernesto Palla Ball End Nylon Acoustic Guitar Strings 2 Pack String Gauges: .028, .032, .040, .030w, .036w, .042w Perfect fit for anyone looking to restore brilliant sound to a one of a kind instrument. Made of a solid nylon filament. Silver fourth, fifth, and sixth wound strings are made of silver plated copper wrapped around a nylon floss core providing a smooth, rich tone. Medium Tension; Ball End