EPS170-6SL is a Super Long 6-string version of the best-selling D’Addario ProSteels bass set. With the addition of the .130 low B and wound .30 high C strings, this set offers the ideal combination of biting high end, punchy lows and super long life. Fits super-long scale basses with a string scale length of up to 38 inches. ProSteels are D'Addario's brightest and most magnetic bass strings. A specialized steel alloy delivers harmonically rich, brilliant high-end coupled with deep, tight lows that work in tandem to create the coveted "Piano tone" steel players crave. Great for both articulate fingering or aggressive picking, ProSteels give you the extra edge and punch you need to cut through the mix.