Box contents: 3 blue filters, 1 bristle brush, 1 flexible beater brush, 3 side brushes with pre-installed screws, 1 flat cleaning tool, 1 round cleaning tool. Compatible with Irobot Roomba 600 Series 606, 610, 611, 612, 614, 615, 616, 618, 619, 620, 621, 625, 627, 630, 635, 637, 640, 643, 645, 650, 651, 652, 655, 660, 665, 667, 670, 671, 675, 676, 677, 680, 681, 685, 690, 691, 692, 693, 694, 695, 696, 697, 698. To keep your vacuum running at peak performance, please clean the filter once a week (twice a week in homes with pets) and replace it every 2 to 3 months. Please maintain the combination brush every month (every 2 weeks in homes with pets) and replace it every 5 to 6 months. Please maintain the side brush once a week (twice a week in homes with pets) and replace it every 3-4 months. Filters capture fine dust, dirt, pet hair, and small particles. The roller brush superiorly picks up pet hair, dirt, dust, and debris and works well on floor types: hardwood, carpet, tile, and