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 Environmentally friendly, corrosion resistant packaging for strings that are always fresh |