1. Why do you need authorized dealers and genuine official accessories? When you buy an iRobot product, you are investing in your home. Purchasing iRobot products from an authorized reseller is the only way to ensure that you are getting the best value for your money. Products purchased from unauthorized resellers will not be covered, insured, or serviced by iRobot.2. Regular maintenance of your Roomba e or i-series robot vacuum cleaner will help it maintain optimum performance. 3. This replacement kit contains everything you need to keep your robot cleaning performance in top condition.4. The kit includes: 3 rotating side brushes, 3 high efficiency AeroForce filters, 1 set of two rubber multi-surface brushes (green)5. Compatible: Roomba e and i series only