What's In The Box: 2 x Main Brush Guards. These Replacement Parts are Compatible with eufy RoboVac 11S, RoboVac 15T, RoboVac 30, RoboVac 30C, RoboVac 15C, RoboVac 12, RoboVac 35C, RoboVac 11S Max, RoboVac 15C Max, 30C Max, G30, G30 Edge, G30 Hybrid, G30 Verge, G20, G20 Hybrid, G15, G35, G35+, G40, G40 Hybrid, G40+, G40 Hybrid+, Robot Vacuums. To keep your Robot Vacuum running at peak performance, Please maintain the brush guard every month( every 2 weeks in homes with pets) and replace it every 5-6 months. The main body uses high-grade ABS material, according to the original size, all-in-one molding, perfect compatibility. It is easy to be replaced and installed. No tools are required for installation. Shipping with a strong box to prevent from being damaged in transit.