Upgrade your iRobot Roomba vacuum cleaner with this pack of 21 replacement parts. Compatible with iRobot Roomba i7, i7+, i3, i3+, i4, i4+, i6, i6+, i8, i8+/Plus, E5, E6, and E7 models, these replacement parts are perfect for your vacuum. The economical set includes 1 set of double rubber brushes, 10 packs of high efficiency filters, and 10 packs of side brushes. Made with high-strength materials, these parts ensure the best performance. Featuring two high-quality rubber brushes, one for dirt removal and the other for debris removal, this pack provides thorough cleaning. The side brush can penetrate deep into corners and edges to eliminate more dirt and debris. The replacement filter element can block 97% of dirt, pet dander, and other particles as small as 3 micron. Replacing the parts is easy. Simply wash them by hand with warm water and let them dry completely before reusing. Regularly cleaning and replacing the parts improves suction and performance, and extends the lifespan of your vacuum. For best results, replace the edge cleaning brush and filter every 2-3 months. The rubber brushes should be replaced every 6 months. If you have any questions or need assistance, please contact us. We are committed to providing quality products and efficient customer service.