General description Replacement roller brush for vacuum compatible with LA400/VD550. Please check the model number of your robot vacuum before purchasing to avoid buying an unsuitable main brush. This roller brush is made of high-quality plastic, extremely sturdy, and features thick nylon bristles for effective cleaning. Technical specifications Type: Vacuum Cleaner Parts Color: Red Material: Plastic Package Contents: 1 * Main Brush Measurement allowed error: +/- 1-3cm Usage To maintain optimal cleaning performance, it is recommended to replace the roller brush every 3-6 months. The main brush is designed to remove 99.97% of debris on the floor, ensuring effective sweeping. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.