D'Addario EPS170SL ProSteels Bass Guitar Strings, Light, 45-100, Super Long Scale Super long 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 super long scale basses with a string scale length of up to 38 inches Made in the U.S.A. for the highest quality and performance String Gauges: Wound .045, .065, .080, .100