I usually have relatively low requirements for parts from other manufacturers because they are beautiful or perfect, but I hope and expect that they will do the job. I can ignore imperfections and discoloration (where it doesn't really matter). The only acceptable item in this set is the air filters. When I put the 3 brush rotating element on the Roomba it was too long and kept getting caught under the wheel. So I took them off and put my half broken one back on. As for the rubber rollers (light green and dark), once I installed them (tried both sets) they sounded worse than a plug in the garbage chute. After checking and rechecking and rechecking that everything was ok, I had to take them out and repack everything to return them. I'll have to choose another option, but I'm definitely very disappointed at this point (enough to write this review). I hope this review helps others make an informed decision about the 'options' available. My experience may have been unique, but I suspect not.
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