Compatibility: The replacement parts kit is compatible with iRobot Roomba e/i/j series i6(6550) i6+ i3(i3152) i3+(i3552) i4 i4+(4552) i7(i7156) i7+(i7556) i8 i8+(8550) j7. J7+ 550) Plus E5 (e5154) E6 (e6192) Vacuum Cleaner, including multiple rubber roller brushes, high-efficiency Hepa filters (the filter is not for Roomba Combo J7+ ) and sweeping side brushes for regular maintenance of your i robot Roomba e/i/j. The side brush reaches deep into corners and edges to remove more dirt, dust and debris. Easy to Replace - Replacement accessories for iRobot Roomba e/i/j series are easy to install, just hand wash them in clean water and let them air dry completely. If the brushes are bent due to shipping, simply recover them by soaking them in warm water for a while. Sweeping brushes and filters are replaced every 2-3 months. Multi-surface rubber brushes should be replaced every 6 months.