Martin MA240 Authentic Acoustic SP Guitar Strings 80/20 Bronze Bluegrass 12-56 EURO-RST and are made with alnico

and are made with alnico 5 magnets and enamel-coated magnet wire for outstanding presence and midrange

for maximum comfort and freedom of movement

Standalone means more focus

help control signal peaks

Martin MA240 Authentic Acoustic SP Guitar Strings 80/20 Bronze Bluegrass 12-56 EURO-RST and are made with alnicoProduct Information Martin Authentic Acoustic Superior Performance SP strings feature higher tensile strength and tin plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own. Specifications Gauge E B G D A E Tension Model Bluegrass .