Replacement Parts Fit for IRobot Roomba S9 (9150) S9+ S9 Plus (9550) S Series Robot Vacuum(11 Pack) These replacement parts compatible with iRobot Roomba s9 (9150) s9+ s9 plus (9550) Wi-Fi connected robot vacuum cleaner.Made of high quality materials, durable to use. Easy to remove and replace, convenient to use.To ensure your iRobot Roomba running at peak performance, recommend replace multi-surface brush roll every 3 months and replace filters every 1 month and replace the side brushes every half month, also depending on your frequency of use.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. Each dirt bag holds 30 bins of dirt and debris. Easy disposal without the cloud of dust.colour: green + blackMaterial: plastic + filtersize: 253mmPackage Contents: 2 x main brush roller6 x Side Brushes3 x filtersOnly 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.