Stainless steel roundwound bass guitar strings. These strings, custom gauged by Billy Sheehan, provide the time tested Rotosound Swing Bass 66 standard set with two special advantages: A slightly lighter G provides a more even string to string tension across the neck and makes bending easier. A heavier E string makes for a tighter low end with increased mass for more volume in the lower register. The 0.110 gauge also facilitates tuning down to a low ‘D’ without the string bottoming out or loss of intonation."