[Compatibility Assurance] Designed exclusively for Freo X Ultra and Freo Z Ultra Robot Vacuum, these non-original replacement brush rollers perfect fit and function. Verify your model before purchasing to compatibility. [Value Pack] Receive two premium quality brush rollers in one package, offering a cost-effective solution to maintain your for Freo X Ultra's cleaning efficiency. Ideal for keeping your robot vacuum operating at performance. [Effortless Installation] These brush rollers are engineered to match the old parts for a hassle-free replacement. Easy to detach and clean, simply rinse under cold water and dry completely before reinstalling. Replacement every 3-6 months is recommended for optimal performance. [Superior Cleaning Performance] Designed with a flat cylindrical structure to protect floors, these rollers work on all hard surfaces including laminate, wood, marble, and tile. Features a self-cleaning mechanism that saves time and enhances cleaning efficiency. [Advanced