General description The Multi-Rubber Roller Brush is a high-efficiency replacement part kit designed for the S9 (9150) and S9+ (9550) Wi-Fi connected robot vacuum cleaners. Made from environmentally friendly rubber, this roller brush is soft yet durable, effectively aiding in floor cleaning and promoting a clean air environment. Technical specifications Material: Rubber Package Contents: 4 Roller Brushes Allowed measurement error: +/- 1-3 cm Installation Easy to install without complex steps, providing a hassle-free cleaning experience. Usage Replace the filter every 2-3 months to maintain vacuum cleaning performance and reduce dust infiltration. Other information Note: Color may vary slightly from the picture due to lighting and display differences.