ELECTRIC GUITAR STRING SET EHR Series Stainless Steel String Set for Electric Guitar (011 - 014- 018 - 028 - 038 - 049) 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 classic wound strings with a smooth feel similar to flat wound strings.