General description The Replacement Parts Main Brush Filter Accessory Kit for E20 is designed to keep your E20/E20 Max/E25/E30/E31 robot vacuum cleaner operating efficiently. This comprehensive kit includes all necessary components for routine maintenance, ensuring optimal performance. Technical specifications Colour: Blue and white Material: Plastic Package Contents: 10 HEPA Filters, 8 Side Brushes, 2 Main Brushes, 1 Cleaning Brush Measurement allowed error: +/- 1-3 cm Installation No tools needed for installation Super easy to remove and assemble Usage It is recommended to replace the replenishment kit every 2 to 3 months, depending on your usage frequency, to maintain the robot vacuum's performance.