Well I'm assuming they aren't since nowhere seems to keep them in stock on a regular basis, and the places that do have like one gauge of nickels and 4 or 5 of the stainless steel Rotos. I'm talking about the Nickel RS 66 Swing Bass with the blue silking. Is there some reason for this I'm not aware of? I tried the stainless Swing Bass Rotos first and I like their sound a lot but they were ultra rough on the fingers and frets. So I tried the nickel version and the sound is similar (not QUITE as bright but still brighter than most) and they feel a lot nicer to play on, and even last a little longer before needing to be changed. I'm just curious why you never hear hardly anything about them. Gets to be a pain having to order them online all the time!