D'Addario EZ940 85/15 12-string Bronze Acoustic Guitar Strings 10-50 Gauge D'Addario Great American Bronze EZ940 85/15 Bronze roundwound 12 string acoustic guitar strings. Full fundamental low end , extremely bright high end, even more tonal range than 80/20 bronze strings. Great American bronze strings combine the brilliance of 80/20 alloy strings with the great sustain and long-lasting characteristics of phosphor bronze. Gauge 10-50 - 10, 10, 14, 14, 22, 08, 30, 12, 40, 18, 50, 26 Made in the USA