Compatibility - This replacement accessory kit is compatible with iRobot Roomba 600 610 614 620 625 630 635 640 645 650 655 660 665 670 671 680 690 691. For best results, the filters should be replaced every 2 to 3 months. Effective Cleaning - Keep your home tidy, remove hair, debris or particles and help clear the air of dust, allergens and other particles. The cleaning brushes included in the kit are very practical. High Quality - Made of environmentally friendly and high-strength materials. It is rigorously tested for compatibility and durability. Easy to install and offers good durability. What You Get - Complete maintenance kit, each package includes 3pcs filter, 4pcs side brush and 4pcs screws, 1set bristle brush and flexible beater brush, 1set cleaning equipment.