Gauges 40-60-75-95.
Half Round Bass Strings are roundwound with stainless steel and then precision ground leaving the outer surface smooth and "semi flat." The result is a string with the tonal characteristics of roundwound strings, with the smooth feel of flat wound strings.
D'Addario is the world's largest manufacturer of strings for musical instruments. Many top guitarists won't play any other brand. Regardless of your playing style, D'Addario has a set that's right for you.