Historic stainless flatwound guitar strings in gauges 10-13-17-26w-36-46. Great for jazz, but also used for many other styles of music.
Benefits of Flatwound Guitar Strings:
- Consistent tone over the life of the strings
- Less Fret wear
- Smooth surface causes less "squeaking" and easier on fingers
- Mellow sound
- Last longer than round wound strings, trade off in price.