Size: 20*16*6cm Product model: i7 i7+E5 E6 series Package contents: 2 * main brush, 5 * filter, 8 * side brush, 1 * screwdriver, 1 * small brush, 1 * universal wheel 1.Compatibility? t: Accessory kit Compatible with iRobot Roomba i7 i7+ E5 E6 series, these replacement parts are suitable for your vacuum cleaner. 2. Package contents: 2 main brushes, 5 filter grids, 8 side brushes, 1 screwdriver, 1 toothbrush and 1 universal wheel. 3. High performance: Two high-quality rubber brushes are perfectly combined, one for removing dirt and the other for cleaning it. The side brush reaches corners and edges to remove more dirt and debris. Replacement filters keep out dust, pet hair and other particles as small as microns. 4. Easy to replace: To ensure the sweeping robot is in the best working condition, it is recommended to replace the multi-sided rotating brush every 3 months, the filter every 1 month and the side brush every half a month, mainly depends on the frequency of use.