All parts of this kit offer the best quality and are tested to ensure their good behavior over time. excellent compatibility with all Roomba 600 Series models: 605, 610, 612, 615, 616, 620, 621, 630, 631, 632, 645, 650, 651, 655, 660, 661 Pet, 665, 669, 670, 671, 675, 680, 681, 685, 691, 695, 696. Includes: 3 filters, 3 3-blade brushes, 1 6-blade brush, 1 set of center rollers, 2 cleaning tools and 3 brush screws.