Martin Guitars Authentic Acoustic SP 80/20 Bronze Acoustic Strings 10-27 & 10-47 Extra Light 12-String Set

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. Martin's 

impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why they make their own.

Gauge: Extra light 12-string
Gauges: 10, 14, 10, 12, 18, 27 & 10, 14, 23, 30, 39, 47
Tension: 264.8