D'Addario EPS170M ProSteels Bass Guitar Strings, Light, 45-100, Medium Scale Medium scale version of D'Addario's most popular ProSteels bass guitar set D'Addario's brightest and most magnetic bass strings offering harmonically rich, deep and penetrating tone Fits long scale basses with a string scale length of up to 36 1/4 inches Made in the U.S.A. for the highest quality and performance String Gauges: Wound .045, .065, .080, .100