D'Addario EFX170-5SL 5-String FlexSteels Bass Guitar Strings, Light, 45-130, Super Long Scale Deep, round sound with just the right amount of punch and bite. Flexible feel optimized for finger style and slapping players Fits long scale basses with a string scale length of up to 36 7/8 inches Made in the U.S.A. for the highest quality and performance String Gauges: Wound .045, .065, .080, .100, .130