【Compatible Model】This replacement rubber brush is compatible with iRobot for Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+ E5 E6 E7 the robot vacuum cleaner. 【High Performance】This high performance rubber i7 brush quality, soft and flexible, better contact with the floor or carpets. This set performs just as well as the original, with a precise fit and easy installation. 【Effective cleaning】This E5 roller brush attachment is suitable for all types of flat floors. Dual multi-surface shaped roller brushes more effectively capture dust, debris, pet hair, etc. 【Highly Efficient Technology】Unique multi-surface rubber brushes won't tangle with animal hair. The E6 brushes adjust and bend to stay in constant contact with carpets and hard floors. 【Value Package】2 sets of i7 roller brushes. (Note: There may be some noise when the rollers are used for the first time, but it will disappear after using for a while.)