PERFECT FIT: They are designed to replace for iRobot Roomba I & E & J Series, compatible with Roomba j7 i3 i8 i8+ i7 i7 + i7 plus E5 E6 E7 vacuum cleaner set. This replacement parts work as same excellent performance as the original, perfect fit and easy install in your. Excellent Performance: Two high-quality rubber brushes are perfectly matched, one for stripping dirt and the other for sweeping dirt. Our superior replacement brush can capture almost all the food debris, pet hair and other. Also, with unique design, the side brush is long and flexible enough to reach into deeper corners and edges, keeping your house truly clean. Premium Material: Well made of high-quality material, wear-resistant, delicate and soft, these brush accessories can effectively help the vacuum cleaner to clean the floor, providing you with better performance and a healthier lifestyle. Easy to Use: Clean by hand washing in warm water and let it completely air dry before reusing them. Regularly clean replacements parts to improve suction and performance and extends the life of your robot vacuum. For best results, edge-sweeping brushes and filters should be replaced every 2 - 3 months.Multi-surface rubber brushes should be replaced every 6 months.