Coined the third type of string, XL Half Rounds are an innovative combination of round wound and flat wound strings. Half Rounds electric guitar strings have a smoother feel than round wound strings, but a fuller tone than strings which are flat wound. Made with a high carbon steel core and stainless steel wrap wire, theyre finished with a precision grinding process to provide a smooth feel and reduced finger noise, with tone that's comparable to round wound strings. This 9-42 Super Light gauge set is easy to bend and very flexible.