Size: 20 x 16 x 6 cm Product model: i7 i7+ E5 E6 series Package content: 2 main brushes, 5 filters, 8 side brushes, 1 screwdriver, 1 small brush, 1 universal wheel 1 . Compatibility: The accessory set is compatible with iRobot Roomba i7 i7+ E5 E6 series, these spare parts are suitable for your vacuum cleaner. 2. Package includes: 2 main brushes, 5 filter screens, 8 side brushes, 1 screwdriver, 1 small brush, 1 universal wheel. 3. High performance: two high quality rubber brushes are perfectly matched, one for removing dirt and the other for cleaning dirt. The side brush gets deep into corners and edges to remove more dirt and debris. Replacing the filter can block dirt, pet hair and other particles down to microns. 4. Easy to replace: To ensure that your robot sweeper works optimally, it is recommended to replace the multi-surface brush roll every 3 months, the filter every 1 month and the side brush every 15 months. depending on your frequency of use.