Description: To keep the robotic vacuum cleaner in excellent working condition and capacity, this replacement part set is a great choice for you. The replacement part set suits for robot vacuum cleaner, improving cleaning efficiency of the robot vacuum cleaner. Fits for 811GB 911S Vacuum Cleaner Replacement Parts Main Brush: Floating structure and rolling design for deep cleaning. Side Brush: Designed to collect stubborn, difficult to reach dirt which gathers in corners or sticks to walls, the brushes can help converge dust and debris directly into the dust box of robot cleaner. Mop Cloth: Made of high-strength and environmental protection material, better cleaning performance. Filter: Reducing infiltration of dust, pollen and other allergens into the air you breathe. Specification: Size:approx.200mm/7.87in Package Includes: 1 Piece Main Brush 3 Pairs Side Brush 4 Pieces Mop Cloth 5 Pieces Filter (2 Pack) Note: 1.Please allow a slight difference between the size from the above and the actual item due to manual measurement. 2.Due to the difference between different monitors,there could be a little color difference acceptable, please kindly note.