General description Replacement parts for Xiaomi Vacuum 2 / 1S and Roborock S50 S51 E25 E20 Robot Vacuum Cleaners, designed to maintain optimal cleaning performance and reduce allergens in your home. Technical specifications Material: Plastic Color: As shown Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with Xiaomi Vacuum 2 / 1S Compatible with Roborock S50 S51 E25 E20 Package Contents: 1 x Rotating Brush, 2 x Side Brush, 4 x HEPA Filter Usage Clean brushes help maintain the robot's peak performance. Side brushes are easy to remove and replace as part of routine maintenance. For best results, replace filters every 2 to 3 months. Filters help reduce dust, pollen, and other allergens in the air.