Gauges 12-16-25-32-42-54

Martin M140 Light Acoustic Guitar Strings have an 80/20 composition for brilliance, clarity, and longevity of sound. The Bronze winding alloy is ideally suited for making strings have deep, rich basses and clear, bright trebles. The Martin M-140 acoustic pack has high-quality strings for daily use. Core and wrap wires meet strict requirements to make the grade. Martin guitar strings are wound to precise specifications.