hold up!
I saw your other thread too before you sell this off I think you can make this work.
That nozzle and wand will not be compatible with the stock hose since they are a direct connect type rather than a pigtail (having a cord)
So what you appear to have gotten seems to be for adding a power nozzle to backpack vacuums, the good news here is that this appears to be a wessel werk retrofit hose which should be able to be converted to use with your tristar.
First you'll need to change the machine end on the black hose. That piece circled in red should be able to disconnect from the hose it should just be held in via friction if you get that off you'll want to get this part in the link it will just pop into place when inserted and you'll be able to plug the black hose into the tristar.
As for the electrical connection you should be able to disconnect it at the green arrow to get a 2 pin connector, now i'm not sure if it's long enough to make the distance to the power nozzle plug on the body of the machine, as it looks rather short in the photo, but if it's not there's no need to worry these too are replaceable
If you take these steps and convert the hose you'll find it far more convenient as you'll have an on/off switch for the power nozzle at your fingertips enabling you to more easily clean hard floors
If you need further assistance or are having a hard time I can provide a video walkthrough on this as I have two hoses around that are very similar to yours
https://www.ebay.com/itm/Compact-Tr...-Machine-End-Assembly-983801-00-/203034741997
