D'Addario Phosphor Bronze Medium, Acoustic Guitar Strings, 3 Sets with Free Peg Winder Buy 3 sets and save with this corrosion resistant 3-pack D'Addario's most popular choice for heavy strumming, flat-picking and resonant, projecting tone Includes FREE Planet Waves Ergonomic Peg Winder with built-in string stretcher and bridge pin puller Made in the U.S.A. for the highest quality and performance String Gauges: Plain Steel .013, .017, Phosphor Bronze Wound .026, .035, .045, .056