Sorry for the late reply. The end of the vacuum hose (?) fits into this 3D printed part. This part also has something on there to adjust the suction, so I would think a lot of different vacuums could be used. If you visit the website or even email the guy, he would probably let you know what vacuum hose would fit that part or maybe he can give you the dimensions. This is kind of hard to describe, but I can PM you a picture of what I am talking about later, if you want.Finding a suitable shop-vac is not so easy in Europe though, they're not so common here as far as I can tell. I may of course be looking for completely the wrong thing though.