Amyehouse Replacement Parts Filter & Clean Tool & 6 armed Brush & Bristle Brush & Flexible Beater For iRobot Roomba 500 Series 510 530 540 550 Vacuum Cleaner Accessory The replacement parts kit is compatible with iRobot Roomba 500 Series 510 530 540 550 Vacuum Cleaner Accessories The innovative Side brush for iRobot Roomba 500 Series vacuum cleaner can reach deep into corners and edges to remove more dirt, dust and debris. 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. For best results, these roomba replacement filters and brush should be replaced every 2 - 3 months. The accessories kit contains 2 Bristle Brush,2 Flexible Beater,3 Filter,1 Clean Tool and 1 pc armed-6 side Brush.