Martin 80/20 11 gauge custom light acoustic guitar strings are made from 80% copper and 20% zinc wire wrapped around hex shaped tin plated steel core wire.
Martin M175 guitar strings provide a clear, rich sound, and are ideal for every-day use.
Martin Custom Light strings gauges (measured as diameter in 1/1000th of an inch):
- E 11 (1st string)
- A 15
- D 23
- G 32
- B 42
- E 52 (6th string)