MARTIN MA540 LIGHT 12-54 PB Acoustic Guitar Strings

Martin® Authentic Acoustic® Superior Performance SP® strings
feature higher tensile strength and tin-plated core
wire on all six strings, which ensures a richer and
more balanced tone, faster response, and increased tuning stability.
Martin's impeccable acoustic guitar tone standards
are incorporated into Martin's string design and precision manufacturing process.
Material: 92/8 Phosphor Bronze.
String gauges: .012, .016, .025, .032, .042, .054.