iRobot Roomba 550 Series Vacuum Cleaner Accessory Kit Replacement -Kit Includes: 3 Filters, 3 Side Brushes, 3 Flexible Beater Brushes, 3 Bristle Brushes Kit Includes: 3 Filters, 3 Side Brushes, 3 Flexible Beater Brushes, 3 Bristle Brushes For Roomba 550 Series Premium Quality Filters maintain optimal cleaning performance. Filters reduce infiltration of dust, pollen and other allergens.