Robot Vacuum Cleaner Accessories. Replacement and replacement of vacuum cleaner accessories, improve air quality, extend the life of vacuum cleaners, Replacement cycle: 1. It is recommended to replace the main brush every 3 months, 2. The side brush is recommended to be replaced every 1-2 months. 3. The HEPA filter is recommended to be replaced every 5-6 months. Material: ABS Color: as shown Package Contents: 1 x Main Brush 8 x Side Brushes 6 x Filters 6 x Dustpans Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.