D'ADDARIO'S MOST POPULAR ACOUSTIC GAUGE, IDEAL BALANCE OF TONE AND PLAYABILITY. EXTRA-BRIGHT TONE MIXED WITH DEEP AND PROJECTING BOTTOM END. EXTRA-BRIGHT TONE MIXED WITH DEEP AND PROJECTING BOTTOM END. ENVIRONMENTALLY FRIENDLY, CORROSION RESISTANT PACKAGING FOR STRINGS THAT ARE ALWAYS FRESH. MADE IN THE U.S.A. FOR THE HIGHEST QUALITY AND PERFORMANCE. STRING GAUGES: PLAIN STEEL .012, .016, BRONZE WOUND .024, .032, .042, .053.