I however like to use the old term and rinder is the obscure traditional name. My collection of rinders doubled with a recent trade. The top two are square tapered and works great on wood, although it does work on soft metal.
The lower two have 5 sides instead of the 4 on the square rinders. The larger 5 sided rinder is stamped P.S. Stubs. All of my rinders fit in a brace, even the odd square tang can be held in my all metal Fray & Pigg, Spafford pattern coach maker’s brace.