Martin MM12 Retro Acoustic Monel 012-054 string set

This Martin MM12 Retro Acoustic Monel 012 string set can be used on western guitars. The steel string is wounded with a monel alloy winding of nickel and copper. 

-string set for western guitar.

-string set: 012 – 015 – 025 – 031 – 041 – 054.

-round wound.

-material: steel string, nickel/copper monel winding.