Rotosound Regular Double Six Nickel Electric Guitar 12-String Set 10's are developed in conjunction with some of the world's top artists, these unique sets deliver a smooth powerful tone that lasts while other strings have long gone dead. Superb brilliance and strength make Rotosound strings the first choice for the professional. Gauge:.010 .014 .010 .014 .022w .028w.010 .014 .022w .028w .038w .048w