Compatible models: compatible with Roborock S8 Maxv Ultra All-in-One Dock Clean tank filter: the water filter element can catch and remove impurities in the water such as dust, fine particles, etc., preventing these impurities from entering the inside of the machine, and protecting the normal operation of the machine MAINTENANCE BRUSH The self-cleaning ability of the mop is further improved by brushing away stains on the surface of the mop with high speed rotation and scraping away waste water with a pressurized mop knife Edge mop scrubber: made of high-strength plastic. Thanks to the latest concave and convex design, the edge cloth is easy to clean. Good wear resistance and easy installation. This is part of your daily maintenance routine and helps you keep your home clean Easy to use: self-cleaning, easy to disassemble and clean, keeping the sweeping robot in better operating condition. We recommend replacing accessories every 2-3 months so that the machine can achieve the best cleaning effect Colour: Material:plastic Package Contents: 1 * water filter 1 * maintenance brush 1 * Small rag holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.