The side brushes seem to fit. The bristles on the side brushes in this set actually feel a bit stiffer than the original Eufy side brushes. It seems to me that they will last longer due to their rigidity. However, such rigidity can lead to damage to the baseboards. I can not confirm that; That's exactly what I was thinking based on other robot vacuum cleaner reviews I've seen. The white filters have the same quality and dimensions as the original Eufy filters. There are no complaints. The black mesh filter in this kit was a few millimeters thicker. It doesn't sound like much, but the Eufy Black Clutter filter is only a few millimeters thick to begin with, so I'm guessing the black mesh filters in this kit are around 30-40% thicker. As a result, the filter flap on the dust box protrudes slightly after closing. I don't think there will be any problems. Just clip an unnecessary load onto the trash can. I was able to easily slide the dust bin in and out of the vacuum cleaner when using the black mesh filter. I took the Eufy roller brush out of the vacuum and compared it to the roller brush in this kit. The bristles on the Eufy roller brush are stiffer, and the other blue rubber carpet stirrers on the roller brush are more ductile on this set's roller brush. I suspect the roller in this set will not last as long as the original Eufy roller brush. It's not an ideal OEM replacement kit, but considering the difference in price, it could be good for you. I am returning my set because one of the black screens broke so I will only use OEM replacements. They're not much larger than this set and fit snugly and will likely last longer so I'm not sure the savings will be worth it in the long run.