Rotosound RS665EL Extra LongRotosound RS665EL 5 String Extra Long Scale Swing Bass Steel Electric Bass Guitar Strings 45 130 This is the roundwound string that James How and John Entwistle perfected into what was to become the industry standard. The bright, punchy, high energy sound of Swing Bass 66 strings is a major part of early rock music history and brought the bass player from the back line to the front of the stage. EXTRA LONG SCALE 850mm 915mm 33. 5" 36