ELECTRIC GUITAR STRING KIT EHR Series Stainless Steel String Set for Electric Guitar (009 - 011 - 016 - 024 - 032 - 042) Super. Half-Round wound. HalfRound Electric Guitar strings are round wound with stainless steel and a precision system then leaves the outer surface smooth and "semi-flat." The result is a string with the tonal characteristics of classical wound strings with a similar soft feel. to the flat wound strings.