POPULAR FLATWOUNDS WITH SMOOTH FEEL, WARM/MELLOW TONE AND TIGHTER TENSION-. RIBBON WOUND AND POLISHED FOR ULTRA-SMOOTH FEEL AND WARM, MELLOW TONE. RIBBON WOUND AND POLISHED FOR ULTRA-SMOOTH FEEL AND WARM, MELLOW TONE. 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, STAINLESS STEEL FLAT WOUND .024, .032, .042, .052.