Oh, my bad. I didn't read your post closely enough.
It is a 3 pin roll crimper that was produced by a small company/person a few years ago, but is no longer available. It was marketed by the company "Reloader's Network", but a buddy just recently checked on one and said no longer available.
There are other brands that are available, however.
https://www.precisionreloading.com/c...#!l=MM&i=RC410
https://www.ballisticproducts.com/GA...nfo/GAEPC0241/