Strings for electric guitar. EHR370's combine the playability of a traditional 11-49 set with the benefits of an exclusive ''Half Round'' manufacturing process. D'Addario Half Rounds Electric Guitar Strings are round wound with stainless steel and then precision ground leaving the outer surface smooth and ''semi flat''. The result is a string with the tone and tension characteristics of round wound strings, with a smoother feel, similar to flat wound strings. Gauges: . 011, . 014, . 018, . 028, . 038, . 049