C.F. Martin Acoustic Guitar Martin Flexible Core FX 92/8 Phosphor Bronze .0125 - .055, MFX-745
C.F. Martin Acoustic Guitar Martin Flexible Core FX 92/8 Phosphor Bronze .0125 - .055, MFX-745star rating 4Paul LJanuary 30, 2010The gauge is more light than medium; the flexibility is excellent and the phosphor bronze is warmer than the 80/20.