PRS CLASSIC SERIES STRINGS?These strings have been proven over decades of use on PRS guitars. They?re world class. - Paul Reed SmithPRS Classic Series Strings are flexible and long-lasting, so you can strum, bend, and pick with confidence. Used on PRS guitars for more than thirty years, PRS Classic Series Strings are a proven winner for players of all styles.Nickel-plated steel strings with hex-shaped.high-carbon steel core for long-lasting vibrant tone.Our strings are coiled in pairs accordingly: 1st 4th, 2nd 5th, 3rd 6thAll PRS Classic Series Strings come in corrosion-free packaging to keep strings fresh. Made in the USA.Individual string gauges: .0095, .0115, .016, .024, .034, .044.(ACC-3104)