General description The 16 Replacement Accessory Kit for iRobot Roomba models E5, E6, i3, i4, i7, and i8 includes essential components to maintain your vacuum cleaner's performance. This kit features high-quality parts designed to effectively remove dirt, pet hair, and debris from your home. Technical specifications Size: 20*16*6 cm Product model: i7, i7+, E5, E6 series Package contents: 2 main brushes, 4 filters, 4 side brushes, 4 screws, 1 screwdriver, 1 small brush Compatibility and accessories Compatible with iRobot Roomba i7, i7+, E5, E6, i3, i4, i8 models Usage Replace the multi-sided brush roller every 3 months Replace the filter every 1 month Replace the side brush every half month Replacement frequency may vary based on usage