This part contains a bushing/bearing which I thought would be sold separately (it is built into the brush). My only complaint is that the brush doesn't have ridges running the full length of the brush like my original. Without grooves it is more difficult to cut the hair wrapped around the brush *Update* This part is broken, less than 5 months have passed since purchase. I use it every day but only for light vacuuming as I have a housekeeper who comes in and does the deep cleaning and I have mostly wood floors with some rugs. The part of the brush that holds the bearing wears out and consequently gnaws at the end of the brush as well as the end of the assembly. Garbage.
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