I have been searching for those nuts and chucks as well. I found that mac allister Cod127r has the same chuck and nut with those of Feider, Woodster, delta fox and perhaps FerM and Fartools. They are fixed router. Take a look at this http://www.feider.fr/images/feider/Actualites/id-defonceuse-mai-2007-2.pdf
Budi Gunanto, February 2011