D'Addario EXPPBB170-5 5 Phosphor Bronze Coated 5-String Acoustic Bass Strings, Long Scale, 45-130 Designed specifically for use on all long scale 5-String acoustic basses with a string scale length of up to 36 7/8 inches EXP Coated phosphor bronze for warm, bright, well balanced acoustic tone and 4 times more life Environmentally friendly, corrosion resistant packaging for strings that are always fresh Made in the U.S.A. for the highest quality and performance String Gauges: Phosphor Bronze Wound .045 .065, .080, .100, .0130