I have 2 vacuum cleaner sharks and they are damn hard to find. Even the shark doesn't sell this for either of my two models. I tried other brushes and they were small. I just want an original style that keeps sliding. To do this I have to use the largest adapter, cut off the bottom half and it fits, but it doesn't look very good. At least it's cheap and works I guess. After 10 minutes of use, some hairs already seem to be bent and broken.