Thomastik Plectrum acoustic guitar strings set 13-61. A remarkable string that prompts comments like: "l never knew a string like this existed!". The combination of lower overall tension, hybrid arrangement of flatwounds (A,D,G) with roundwound low E, and silk inlays (for precise overtone balance) produces a beautiful, almost classical tone, with the warmth of bronze and the easy playability of a fine set of jazz strings. And because of its low, evenly balanced tensions, PLECTRUMS can extend the playing life of many fine older guitars with weak bracing or other special age conditions.