Optimal Compatibility: Designed specifically for W400 Floor Washing Robot, this replacement set ensures and function. Enhanced Cleaning Performance: The high-quality roller brush penetrates deep into carpets and hard surfaces to lift dirt and debris, while the scraper effectively removes stubborn stains and spills. Materials: Constructed from robust materials, this kit withstands regular use, ensuring long-lasting reliability and performance. Easy Installation: Simple to install with no tools required, this set allows for convenient maintenance, keeping your robot operating at efficiency. Maintenance Advice: Regular replacement of the roller brush and scraper maximizes the cleaning efficiency and lifespan of your for W400 robot. Color:As Shown Material:Plastic+rubber Package Contents: 1 * Roller Brush 1 * Scraper 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.