Those who use any of iRobot's family of Roomba Robotic Vacuum Cleaners know and love how simple it can be to maintain a tidy, welcoming home. Compatible with all 500 Series Roomba Robots with a red or green cleaning head (sold separately), this robust kit provides replacement beater brushes to keep the cleaner in good working order. Includes three beater brushes with end caps and bearings. Bristle brushes with bearings are sold seperately.