For Irobot Roomba S9(9150) S9 + S9 Plus Hepa Filter Side Roller Brush Compatible with for iRobot Roomba s9 (9150) s9+ s9 plus (9550) Wi-Fi connected robot vacuum cleaner.HIGHLY PERFORMANCE: Premium quality side brush reaches deep into corners and edges to remove more dirt, dust and debris. The HEPA filter blocks 99.97% of pollen, dirt, dust, pet dander and other particles as small as 0.3 Micrometres in size. The premium quality rubber brush is perfectly matched, one for peeling off dirt and the other for sweeping dirt.MAINTENANCE: To ensure for iRobot roomba running at peak performance,recommend replace HEPA filters every 2 months and replace the side brushes every half month, or dependent on usage.Colour: as shownMaterial: plastic + rubberSize: 25cmPackage Contents:2 sets * Main brushes6 * Side brushes4 * Filters1 * Cleaning brush1 * ScrewdriverOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.