Rarely available for sale, this is one my own “masterpiece” labeled FL double rings. I was using this myself for quite some time.  It is a prime blank FL piece that I set up to .098 which is quite an ideal size for these.  It has a rather long rolling baffle.  It plays with an optimum balance of crispness, speed, brightness, and spread.  It is on the bright side for double rings, exceptionally flexible and colorful.  The label does not lie. Those who know, know.