ELECTRIC GUITAR STRING SET EHR Series Stainless Steel String Set for Electric Guitar (010 - 013- 017 - 026 - 036 - 046) Regular. Half-Round wound. Half Round 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 classic wound strings with a smooth feel. similar to flat wound strings.