Iautomatic Bristle Brush & Flexible Beater Brush for iRobot Roomba 500 Series Roomba 510, 530, 535, 536, 540, 550, 551, 552, 560, 564, 570, 580, 610 Vacuum Cleaning Robots all Green, Red, Black cleaning head Package includes: 1 Bristle Brush & 1 Flexible Beater Brush Compatible with iRobot Roomba 500 series: 510, 530, 535, 537, 540, 550, 560, 570, 580, 610