D'Addario EPS190 ProSteels Bass Guitar Strings, Custom Light, 40-100, Long Scale Ideal combination of comfortable playing tension with booming, tight low end D'Addario's brightest and most magnetic bass strings offering harmonically rich, deep and penetrating tone Fits medium scale basses with a string scale length of up to 34 inches Made in the U.S.A. for the highest quality and performance String Gauges: Wound .040, .060, .080, .100