I clean 2xBristle & 2xFlexible Beater Brush&4x6-armed Side Brush for iRobot Roomba 500 Series 510 520 530 540 550 551 560 570 580 For use with iRobot Roomba 500Series only. Replacement filters for iRobot Roomba 500 Series and Roomba Professional Series Robots. Clean brushes keep your home robot operating at peak performance. Side brushes are easy to remove and replace as part of routine maintenance. Filters maintain Roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe.