Specification: Side Brush Size: 57mm Main Brush Size: 20cm Dust Bag Size: 150mmx187mm Applicable for ROBOROCK Q5 Sweeper Package: 1x Main Brush + 4x Side Brush - Application The replacement parts apply for Roborock Q5 robot vacuum cleaners, please kindly check your machine type before ordering. - High Quality self-sealed bag is made of sturdy plastic slot, silicon sealing ring and melt blown fabric without any leakage risk. 5 Arms side brush will be more durable. A tangle-free design of main brush reduces jams caused by tangled hair. - Function Replacing the accessories regularly will also improve the cleaning performance and suction of your vacuum cleaner. Also can help to provide you with fresh air and healthy living environment. - Package 1x Main Brush + 4x Side Brush - Suggestion Please replace the accessories 2-4 month to keep the robotic working with high-performance, just feel free to contact us if you have any questions.