CompatibilityReplacement brush for iRobot Roomba i7 i7+ i7 Plus i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+ E5 E6 E7 Vacuum cleaner. High PerformanceThis rubber brush for roomba i7 high quality, soft and flexible, better contact with the floor or carpets. This set works just as well as the original, with precise fit and easy installation. Effective CleaningThis i7 plus roller brush accessory fits all types of flat floors. Dual multi-surface shaped roller brushes more effectively capture dust, debris, pet hair, etc. Highly Efficient TechnologyThe i7 unique multi-surface rubber brushes do not do not get tangled with animal hair. Brushes for iRobot i7 adjust and bend to keep in constant contact with carpets and hard floors. Value Packing4 sets of roller brushes accessories for iRobot i7. (Note: There may be some noise when using the rollers for the first time, but it will disappear after using for a while.)