I did trial runs to compare this replacement roller brush to the original brush that came with the vacuum. The stiffer bristles (original) seem to be better at picking up cat hair from carpets than this one. His bristles are too soft. The benefit of this replacement is that the design sends the fur to the center instead of collecting a hard-to-remove tangle of hair at the end. I also use a flea comb to clean the bristles on both, which works much better than the comb that came with them.
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