Martin Phosphor Bronze strings are made from 80/20 composition alloy to give brilliance, clarity, and longevity of sound. The Bronze winding is ideally suited for making strings that have deep, rich basses and clear, bright trebles.

MPN: M170
UPC: 729789101707

- Gauges: 10-14-23-30-39-47
- Bronze alloy for brilliance and long life
- Studio-quality performance