D'Addario Electric Bass Chromes Flat Wound Regular Long, .050 - .105, ECB82star rating 5Fretless in TexasFebruary 4, 2010These have the classic flat wound sound! Strong middle and bottom, warm, wooly, however you choose to describe it. Substantial (but not excessive) tension, smooth feel, big sound. Don't be afraid of the gauge. They really are medium. Try them, even if you have frets on your bass!