Who makes a metal ring roller that will roll 1/2" rod. Have a couple projects where this would be useful like rolling a couple new wagon door rings and a couple flat iron loops

I see one listed at Harbor Freight but it shows as only being for 1/4" rod and some of the comments complained about the main swing arm being plastic.

Won't be used heavily so not interested in spending a fortune but at the same time not interested in something with plastic that will break either.

Edit:  Also see this one for tubing but would it work for solid bar material ? wrong dies ?