I bought them in Shoppingzone2014 and they were delivered quickly by Revain. They were good quality and worked well in my Roomba 595 line of pets that I bought from Costco. Note: I (accidentally) bought replacement 500 series rollers for my Roomba 595 only to find out that my 595 series needs 600/700 series rollers. . I think the geniuses at I-Robot didn't quite think it through. Don't repeat the same mistake.
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