Yeah, the Classic Rock strings are their pure nickel strings. As far as I know they make a pure nickel, or Classic Rock, version of all of their normal Slinky strings.
I used to use Super Slinkys and switched to Regular Slinkys. I then switched to the Classic Rock Regular Slinkys and have just recently switched back down to .09s and am using their Classic Rock Super Slinkys.
I love their Classic Rock strings, absolutely love them. I'm getting rid of my Epi G-400 SG for a Gibson SG Standard at the end of the month and the first thing I will do is to put Classic Rock Super Slinkys on it.
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