Buy 10 sets and save with this environmentally friendly, corrosion resistant 10-pack / A D'Addario hybrid gauge, combining light gauge bottom strings with lighter top strings for easy bending / Preferred for its warm, bright, and well balanced acoustic tone / Made in the U.S.A. for the highest quality and performance / String Gauges: Plain Steel .011, .015, Phosphor Bronze Wound .022, .032, .042, .052 /