The nozzle adapter (34.4mm ID) that comes with its brush doesn't fit the hose (35mm OD) on my Shark Rotator Duo Clean, but with this handy little brush I have too Bought a smaller brush head (https://www.amazon.com/gp/product/B01M7PX03T/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&th=1) with an adapter that fits and fits this brush perfectly. I don't know why Shark choose to sell a vacuum without a brush attachment, which I consider to be the most important attachment for any vacuum, but fortunately there are three affordable and adaptable aftermarket brush options. This brush is cheap plastic but works well. My only gripe, aside from the hose adapter, was that the bristles on the back end were flattened rather than angled and are a bit rougher as I like to dust small pieces of furniture. There is a velvety field of material between the bristles that captures most of the dust so well that it has to be vacuumed.