I have a W&S #2 and I need to thread the stem on an End Brush (see link)
to 1/4-20. The stem is about 1" long.

I guess I need a Geometric Die Head. I know little about them or other
methods. What size head should I be looking for? What inserts do I
want? Is there one on someone's shelf gathering dust?

I need to do about 200/hr. The threading will be done before the cup is
filled with wire.

http://www.ebay.com/itm/WEILER-10028...em33817d 2fa6