C.F. Martin Acoustic Guitar Martin Flexible Core FX Silk & Phosphor .011 - .047, MFX-130star rating 5Greg OtashMarch 4, 2010I just recently purchased these strings, and I love them for the ease and playability. I love Just Strings for their patience, and service that is very quick, and accurate. Greg Otash
C.F. Martin Acoustic Guitar Martin Flexible Core FX Silk & Phosphor .011 - .047, MFX-130star rating 5BrianOctober 31, 2009These strings are easy on the fingers. As a fifty year old beginer the best feel and sounding strings for the money.