Rodchuck is the manufacturer of the thread roller... The site is www.rodchuck.com

It goes for about $43... Kinda pricy....

I'm going to try something a little different... I'm going to get a 4 x 40 rod, threaded on one end... Then use a 1 1/2" of 1/8" diam. brass tube to join it with a hunk of threaded rod... that way I'll get the length I'm after and I can use swivel ball links on the ends for a slop free control rod...