Amyehouse Replacement Parts Bristle Brush & Flexible Beater Brush & Filters & Armed-6 Brush & Cleaning Tool for iRobot Roomba 500 Series 510 530 540 550 Vacuum Cleaner Accessories The replacement parts kit is compatible with iRobot Roomba 500 Series 510 530 540 550 Vacuum Cleaner Accessories Side brush reaches 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. 100% Sactisfaction Guaranteed.Full refund for any disactisfaction. The accessory kit contains 2 Flexible Beater Brush & 2 Bristle Brush & 1 Cleaning Tool & 3 Filters and 3 Armed-6 side Brush.