Martin Acoustic SP 80/20 Bronze Extra Light 10-47
Martin SP 80/20 bronze acoustic guitar strings are made from an 80/20 composition alloy to give brilliance, clarity, and longevity of sound. Bronze winding is ideally suited for strings that have deep, rich basses and clear, bright trebles.
String Gauges : Extra Light
.010, .014, .023, .030, .039, .047