Dimensions: 20 * 16 * 6cm Product model: Package contents: 2 * main brush, 5 * filters, 8 * side brushes, 1 * screwdriver, 1 * small brush, 1 * universal wheel 1. Compatibility: This accessory set is compatible with the series, these replacement parts are suitable for your vacuum cleaner. 2. Package contents: 2 main brushes, 5 filters, 8 side brushes, 1 screwdriver, 1 small brush, 1 universal wheel. 3. High performance: Two high-quality rubber brushes are perfectly matched, one for removing dirt and the other for cleaning incrustations. The side brushes reach deeper into corners and edges to remove more dirt and debris. Replacement filters can capture dust, pet hair, and other micron-sized particles. 4. Easy replacement: To ensure optimal operation of the robotic snow blower, we recommend replacing the multi-surface brush every three months, the filter every one month, and the side brush every six months. This depends on the frequency of use.