Martin Guitars MM12 Retro Light

Martin Guitar Retro Light MM12 - String set for acoustic steel-string guitar
Strings with retro sound in legendary alloy!
The Retro model has Plain strings in steel but the spun ones are made of Martin's classic Monel alloy of Nickel and Copper, just like it was in the 1930s. The alloy is naturally resistant to corrosion which gives strings that hold their tone for a long time.
The strings have a less prominent touch which allows the guitar's natural sound and tone to come through in a fantastic way.

Retro Light MM12 contains:
E: 012
B: 015
G: 025 Spun
D: 031 Spun
A: 041 Spun
E: 054 Spun
 
Specifications:
Model: Light
Spun strings in an alloy of Nickel & Copper
Plain steel strings
Tension 162.9 lbs
Manufacturer's part number MM12