https://alexnld.com/product/10pcs-replacements-for-irobot-roomba-s9-s9-vacuum-cleaner-parts-accessories-main-brushes-2-side-brushes-4-hepa-filters-4-non-oem/?hilite="9PCS Accessories Parts Main Brush Side Brush Filter Wheel Main Brush Cover Comb For Xiaomi Robot Vacuum Cleaner"