【Compatibility】This rolling brush is compatible with iRobot Roomba i6+ i7 i7+ i3 i3+ E5 E6 E7 Smart Mapping Robot Vacuum Cleaner with Wi-Fi connection. 【High Performance】Snaps together for quick and effortless exchange. No tools required, easy to replace main brush. This set works just as well as the originals, precise fit and easy installation. 【Rubber Brushes for Multiple Surfaces】This unique rubber tread design adapts to various floor surfaces and removes everything from small dust to large dirt . 【Maintenance】Keep your robot at peak performance by changing the consumable replacement kit every 2-3 months depending on how often you use it. 【Value Package】 2 sets of roller brushes. (Note: There may be noise when using the rollers for the first time, but this will disappear after long-term use.)