To ensure your vacuum cleaner is running at optimal performance, it is recommended to replace filters, rollers, and side brushes every 2 to 3 months. This helps to maintain the suction power of the vacuum and prevent blockages in the filtration system. In addition, regular maintenance can prolong the lifespan of your vacuum cleaner and save you money in the long run.Key Features: FIT MODELThe parts compatible with iRobot Roomba E series E5 E5134 E6 E6198 E7 I series i77150 i7+ i7 plus7550 i8 i8 + i1 i1+ i2 i3 i3+ i4 i4+ i5 i5+ i6 i6+ J series j7 j7+ j8 j8+ Robotic. PACKAGE INCLUDEThe replenishment kit Includes 2 pack multisurface rubber brushes, 8 pack filters, 8 side brushes, 8 dust bags, 2 tools. The products are made of highstrength and environmentally friendly materials to ensure optimal performance and a healthier lifestyle. HIGHLY PERFORMANCEPremium side brush reaches deep into corners and edges to remove more dirt and debris. The filter blocks 99.97 of particles as small as 0.3 microns in size. Each dirt bag holds 30 bins of dirt and debris. Easy disposal without the cloud of dust.Country of Origin: USAManufacturer/Importer/Packed By : BluearksAvailability: Estimated time of delivery is 15 – 17 daysDelivery Region : All over India