The Thomastik-Infeld Classic S KF 100 strings combine several previously diverse characteristics: smooth, brilliant, extra long sustain...with low tension.
Specifically, the KF 100 are an excellent choice for fingerstyle players or anyone who needs extra flexibility to express their music...without sacrificing tone.
The Thomastik-Infeld Classic S Series are soft steel strings with polished winding specially designed for Folk and Concert guitars but they also work extremely well on sensitive archtop guitars with carved wood tops.
Strings E, A, d, g, b are chrome steel flat wound on a highly flexible steel core, e is made is made of plain steel.