The Green Lion Accessory Set for Ultra Vac Robot All-In-One Station & Vacuum Cleaner is a complete kit that provides all the necessary accessories for your robot vacuum to keep it running at peak performance. The filter and sponge included in this combo pack have a high efficiency rating and help clean the air and capture dirt effectively. Additionally, the HEPA filter improves the filtration process by withholding the tiniest particles and thus creating a cleaner environment. Besides a cleaning brush that comes with the maintenance kit to ensure easy maintenance and to prevent your vacuum from having any running issues, there are other components like the mop holder and mop, which make it possible for your robot vacuum to perform both dry and wet cleaning tasks flawlessly. The side brush is an additional tool that reaches every nook and corner for a thorough clean. The dust bag makes it convenient to dispose of the dirt that has been collected, and the roller brush plays the role of loosening up the dirt that is embedded in carpets and hard floors. All these accessories put together give you the assurance that your Ultra Vac robot will not only be great at cleaning but also last for a long time, thanks to the Green Lion Accessory Set.