General description The 21 Replacement Kit for iRobot Roomba E5, E6, I3, I4, I6, I7, and I8 series includes essential components to maintain your vacuum cleaner's performance. This comprehensive set ensures that your device operates efficiently and effectively, providing a thorough cleaning experience. Technical specifications Size: 20 x 16 x 6 cm Package contents: 2 main brushes, 5 filters, 8 side brushes, 1 screwdriver, 1 small brush, 1 universal wheel Compatibility and accessories Compatible with iRobot Roomba i7, i7+, E5, E6 series Usage Replace the multi-surface brush roller every 3 months Replace the filter every 1 month Replace the side brush every 15 months