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.
20 Inch 3 lug pad holder. Fits Clarke SA40 and Nilfisk Advance Hydro Retriver 3800, SC1500, SC6000, SC6500
Fits Aftermarket Nilfisk Advance 56505790 Pad HolderThis part is listed as fitting the following models: