Model Compatibility: Compatible with eufy Robot Vacuum Omni S2. Suggested Replacement Frequency: We recommend replacing every 3 months, depending on your usage frequency. Tool-Free Installation: Easily replace parts on your robot vacuum with a simple, straightforward process. Includes 2 pairs of side brushes. Genuine eufy Accessory: For optimal performance and to extend the lifespan of your vacuum, always use genuine eufy accessories.