【compatibility】This roller brush is compatible with the Wi-Fi connected smart mapping robot vacuum cleaner iRobot Roomba i6+ i7 i7+ i3 i3+ E5 E6 E7. 【High performance】Snaps into place for quick and effortless replacement. No tools required, easy replacement of the main brush. This kit works just as well as the originals, fits snugly and is easy to install. 【Multi-surface rubber brushes】The unique design with rubber profiles adapts to different floor surfaces and removes everything from small dust to large deposits. 【maintenance】Keep your robot in optimal working condition by changing the consumable replacement kit every 2 to 3 months, depending on your frequency of use. 【Valuable packaging】2 sets of roller brushes. (Note: There may be some noise when you first use the rollers, but it will disappear after you use them for a while.) Compatible Models: This brush replacement fits for robotics for iRobot Roomba E Series E5 (E5134) E6 (E6198) i3 i3+ i4 i4+ i6 i6+ i7(7150) i7 plus(7550)