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.
24 Volt solenoid. Fits Viper Fang 20, Fang 20HD, Fang 20T, Fang 24T/26T/28T (replaces VF81726)
Fits Nilfisk Advance VF81726A (alt # vf81726a)This part is listed as fitting the following models: