Have added them to my business contacts.
I've only been using them for a couple of weeks but the fit is good and they are as good as OEM.
Blade Kit-Squeegee Gum. Fits Nilfisk Advance ConvertaMAX 28, 34, Convertamatic 32-38LX, 325LX, Hydro-Retriever 3800.
Front Blade: 44 5/8" x 2 3/8" x 1/8"; Rear Blade: 46 3/4" x 2 3/8" x 3/16"
Fits Nilfisk Advance 56409429
This part is listed as fitting the following models: