The only side brush I've been able to get spinning properly on my D80 is the original side brush that came with the kit. I thought I would be sure to buy the "OEM" parts Neato sells, but unfortunately they don't work. The magnet is too weak to hold the brush on the stand and allow it to rotate, it just sits there and only moves occasionally - certainly not in the same way as the original brush. Don't waste money. I wish Neato would solve this problem as not only do people buy them not knowing that they don't work, I'm sure we would like to have replacement brushes that actually work as intended. Edit 5/2019: Added video showing how slowly he moves across a low-pile carpet. The original OEM brush rotated at high speed - no difference in speed on carpet or bare floor.
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