【Compatible Model】This replacement rubber brush is compatible with iRobot Roomba i7, i7+, i3, i3+, i4, i4+, i6, i6+, i8, i8+, j7, j7+, E5, E6 and E7 robot vacuum cleaners.【High Performance】This high-quality i7 rubber brush is soft and flexible, providing better contact with floors and carpets. This set performs as well as the original, with a precise fit and easy installation.【Efficient Cleaning】This E5 roller brush attachment is suitable for all types of flat floors. The dual multi-surface rubber brushes more effectively capture dust, debris, pet hair, etc.【Highly Effective Technology】The unique multi-surface rubber brushes do not get tangled with pet hair. The E6 brushes adapt and flex to maintain constant contact with carpets and hard floors. [Value Pack] 4 sets of i7 roller brushes. (Note: There may be some noise when the rollers are used for the first time, but this will disappear after a while.)