yes the moly set is actually a "single" moly set w a moly top ring and a cast 2nd ring as opposed to the cheaper ones that the 1st & 2nd rings are both cast. He said their single Moly set is $80 more than a set of cast ones?. I have not priced rings in awhile but you might check Mancini jegs etc & see if you can scare up a better price for a set of (single) Moly rings.