These attachments work great with my small shop vacuum (about 3 gallons I think). I have a 1 ¼" hose and most attachments work great. I bought this mainly for a crevice tool which I think is necessary. Another thing that really surprised me is the round brush. It can clean hard surfaces, without scratching.I use it on my dash and door pockets.It also does a good job removing dog hair from my Weathertechs.