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.
Fits 20 Inch machines.
Fits Clarke CA30 20B and Viper AS510B, AS5160, AS5160T
Fits Nilfisk Advance VF90120 (alt # vf90120)
This part is listed as fitting the following models: