Martin Original M150 80/20 Bronze Medium 6-String Acoustic Guitar Set

The string that started it all 50 years ago is now back by popular demand. Martin’s original M150 medium gauge strings, with 80/20 composition, are ideally suited for players who love deep, rich bass tones and clear, bright trebles. Strings are plain steel and round wound 80/20 bronze, medium gauge 013 017 026w 035w 045w 056w.