Constructed from premium materials for long-lasting use. The side brush reaches deep into corners and along edges to eliminate more dirt, dust, and debris. As part of regular upkeep, it can be easily detached and swapped out. It is recommended to change the replacement parts every 2 to 3 months to ensure the robot operates at optimal efficiency. Compatible models: for Irobot Combo113 R113840. Color: Green. Material: Plastic. Only the contents of the package listed above are included; other products are not part of this offer. Note: Variations in light and different displays may affect appearance.