D'Addario Half Rounds are round-wound strings made of stainless steel that are ground smooth. This gives the surface a soft and semi-flat feel. The result is a string with the tonal and tension characteristics of a round-wound string, but with a softer playing feel, similar to that of flatwounds. The set includes a wound G string. The ground surface reduces finger noise while maintaining the characteristics of round wound strings. Gauge: .012 .016 .024 .032 .042 .052.