D'Addario, Great American Bronze 85-15 Bronze roundwound 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. The 85/15 Bronze wrap wire is precision wound onto a carefully drawn, hexagonally shaped high carbon steel core, resulting in long lasting, bright sounding tone with excellent intonation.
A popular choice for electric players using a piezo pickup.